Starbucks spends roughly $400 million a year on software. This month it told the world it intends to stop.

According to reporting from Bloomberg, the coffee giant is building its own AI-assisted tools to replace an inventory system from Microsoft and a maintenance platform from IBM, with some of the new software rolling out as early as next year. It’s part of a wider $2 billion cost-reduction plan — and the enterprise software market noticed. Shares in IBM, Salesforce and ServiceNow all dipped on the news, not because anyone lost a contract, but because the story that has held up SaaS pricing for twenty years just cracked: big companies will always buy, because building is too hard.

Building isn’t too hard any more.

”Claude is eating Salesforce”

If you spend any time on LinkedIn or X right now, you’ll have seen founders saying the same thing in plainer terms. One post doing the rounds puts it like this: instead of forcing themselves into a bloated CRM, a fast-growing startup built its own internal tool — part Notion, part Salesforce, part custom AI. Their AI coding assistant is connected to the CRM, their email, and their lead-data provider, and from one place they can find leads, send outreach, update deals and manage the pipeline.

Their prediction: within a few years, every fast-growing company will run its own custom CRM instead of renting someone else’s.

We think they’re right — with one important caveat we’ll get to.

Why build-your-own suddenly makes sense

For two decades, the answer to “should we build or buy our business software?” was almost always buy. Building meant developers, budgets, timelines and risk. So businesses paid the subscription, put up with the 80% of features they never used, and bent their processes to fit the tool.

AI-assisted development has flipped that maths. What used to take a development team six months can now be built, tested and shipped in weeks. Starbucks credits AI-assisted coding as key to building the platform replacing its IBM tool — and it’s pushing the approach so hard that AI usage is factored into staff bonuses.

For a small or mid-sized business in Scotland, the same logic applies at your scale:

Custom fit. A bespoke system does exactly what your business does — your sales process, your quoting rules, your reporting — instead of a generic workflow you have to work around.
Falling costs. SaaS subscriptions compound. Per-seat pricing punishes growth. A system you own gets cheaper as you grow, not more expensive.
Your data, your control. No vendor lock-in, no surprise price rises at renewal, no waiting on someone else’s product roadmap.
AI-native from day one. When you own the system, you can plug AI directly into it — drafting outreach, updating records, summarising pipelines — rather than paying extra for a vendor’s bolted-on “AI features”.

The caveat: Starbucks also got it wrong

Here’s the part of the story most posts skip. Starbucks recently pulled an AI-powered inventory system and went back to manual counting because it didn’t work in the real world.

That’s the honest lesson in all of this: AI makes building software faster, but it doesn’t make building good software automatic. A vibe-coded internal tool that falls over during month-end, loses a week of sales data, or quietly exposes your customer list to the internet is far more expensive than any Salesforce invoice.

The businesses that win this shift won’t be the ones that build fastest. They’ll be the ones that fix the process first, build deliberately, and secure what they build.

The security gap nobody posts about

When you buy from Microsoft or Salesforce, you inherit their security teams, their patching, their compliance certifications. When you build in-house, all of that responsibility moves to you — and it’s the piece most DIY builds miss entirely.

An internal tool wired into your email, your customer data and your payment records is a high-value target. Without proper access controls, authentication, backup, and monitoring, you haven’t cut your software costs — you’ve traded them for uninsured risk. For UK businesses, it can also put your Cyber Essentials certification and your cyber insurance at risk.

That’s why we work hand-in-hand with Swanswater Technology Group (STG) — a separate, dedicated cyber security and compliance company we work closely with. Every system we design and build is reviewed against the same standards STG applies to Cyber Essentials certification: secure authentication, least-privilege access, tested backups, and monitoring. Build the upside; close the gap.

Not sure where you stand today? Our free Growth Diagnostic takes five minutes and tells you exactly where the gaps are.

We’ve been building this way for years — on our own businesses first

Here’s why we’re confident this model works: we run our own companies on it.

We don’t rent a big-name CRM. Our lead generation, quoting, pipeline and reporting run on custom business systems we built ourselves, with AI integrated throughout — from spotting newly incorporated companies in the Stirling area to drafting outreach and managing follow-up. Our connectivity brand, Stirling Networks, is a live, public demonstration of exactly that: a business built, marketed and grown on our own systems, where you can watch the results for yourself.

So when Starbucks makes headlines for replacing vendors with AI-built tools, we’re not scrambling to catch up. It’s the approach we’ve been quietly proving out in Central Scotland already.

Thinking about replacing a subscription with something you own?

Whether it’s a custom CRM, a quoting and job-management system, or AI woven into the tools you already have, the path is the same one we use ourselves:

Diagnose — map the process and find where software (or the lack of it) is costing you money. Start with our free Growth Diagnostic.
Design — decide what to build, what to keep buying, and what to retire. Build-vs-buy is a per-system decision, not a religion.
Build — AI-assisted, fast, and fitted to your business — not the other way round.
Secure — reviewed with STG so the thing you own is also the thing that’s protected.

The build-vs-buy calculation has changed for Starbucks, and it’s changed for a 10-person business in Stirling too. The only question is whether you get there deliberately — or after your next renewal notice.

Book a conversation — or run the free diagnostic and see where you stand in five minutes.

Swanswater helps ambitious businesses across Stirling and Central Scotland solve business problems with technology — business systems, digital enablement and AI integration. Cyber security and Cyber Essentials by Swanswater Technology Group (STG). Connectivity by Stirling Networks.

Starbucks Is Building Its Own Software With AI. Your Business Can Too — Here's How to Do It Safely