BUILD VS BUY · AI STRATEGY · SMALL BUSINESS
Every owner asking about AI hits the same fork sooner or later: build something custom, buy a tool off the shelf, or rent the capability as a service. The right answer depends less on the technology than on three things you already know about your own company.
Most small businesses should buy first, rent second and build last. Off-the-shelf AI tools cover standard needs like drafting, summaries and customer replies for a fixed monthly price. Rent expertise when a workflow needs connecting to your own systems. Build only when your process or data is genuinely unique.
Buy: the default first step
Buying means subscribing to a ready-made tool: an AI assistant for the team, an AI feature inside software you already pay for. The entry ticket is public and modest. A standard ChatGPT Business seat costs $20 to $25 per user per month at current published list prices, which vary by country and currency; Microsoft 365 Business Premium with Copilot lists at $32. No project, no consultants, no waiting.
In Switzerland, for example, adoption among SMEs rose from 22% in 2024 to 34% in 2025, according to the State Secretariat for Economic Affairs - and the most common uses are everyday tasks like translation and correspondence.
Rent: when the tool needs to meet your systems
Buying works until the task touches your own documents, email, ERP or customer data. Connecting AI to those systems is a project: someone has to wire it up, set the rules, and make it reliable. Renting means hiring that capability as a service - a specialist sets up the workflow and you keep the result.
This is the natural middle step: more than a subscription, less than an engineering team.
Build: when your process is the product
Building means custom development on your own data and infrastructure. It makes sense when the way you work is genuinely different and that difference is your edge - and it comes with the highest price tag, ongoing maintenance, and a long-term dependency on whoever built it.
How to decide
Three questions settle most cases. Is the task standard, like writing, meetings or translation? Buy. Does it need your own systems and data? Rent the connection work. Is your data or process itself the competitive advantage? Then, and only then, consider building.
The takeaway: buy for standard work, rent for connected work, and build only when your way of working is the advantage.
Sources
SECO - AI gains ground among Swiss SMEs (5 November 2025)
OpenAI - ChatGPT Business pricing (October 2026)
Microsoft - Microsoft 365 Business Premium with Copilot pricing (October 2026)
Last updated: 24 October 2026.
TL;DR: Buy off-the-shelf tools for standard tasks, rent expertise to connect AI to your own systems, and build custom only when your data or process is genuinely unique. That order - buy, rent, build - keeps cost and risk in proportion to what you actually get.
Reading time: ~3 min
Not sure which route fits your company? We help small businesses make exactly this call - and we will tell you honestly when "buy" is the answer. Discuss a project: eli5a.com/contact
