When a team decides whether to keep paying for a SaaS tool or replace it with software it owns, the conversation usually starts with licence fees. The number that actually decides it is harder to see: the technical debt on both sides of the choice.
Debt lives in how you use the tool, not just the tool
Every SaaS product you rely on has grown a layer of your own making around it. Data lives in its schema. Integrations pipe information in and out. Reports, automations, and team habits are all built on the assumption that the tool stays exactly where it is.
That layer is technical debt too. It rarely appears on any invoice, but it is the reason leaving a vendor feels impossible even when the product no longer fits. The debt is not in the contract; it is in the brittle export, the integration nobody documented, and the workflow that only one person fully understands.
Build-versus-buy is really a debt comparison
Replacing a tool means paying down one kind of debt while taking on another. The software you build starts clean, but it will accumulate its own shortcuts the moment it ships under real deadlines. The honest question is not "which option has no debt" but "which debt do we want to own".
BRACKETS frames that as a comparison, not a pitch. Staying means continuing to service the switching cost and the vendor's roadmap. Building means owning the debt yourself, on your own timeline, with the freedom to pay it down when it makes sense. Neither is free; one is under your control.
Pricing the debt before you commit
The way to make the decision real is to price both sides before you commit to either. What does it cost to extract your data and rebuild the integrations you depend on? What does it cost to build and then maintain the replacement? As building custom software gets cheaper, the extraction cost is increasingly the larger number, and that is exactly the debt teams underestimate. Turning "we should replace this" into a plan you can schedule starts with naming that cost out loud.
