Pull the compliance budget of a typical mid-market PSP apart and you find eight line items. Each vendor is best-in-class for its own job. Each vendor speaks a different dialect. Each renewal takes a quarter to negotiate.
The line items are the easy part. The invisible costs are where the pain lives.
Context loss: every investigation starts by exporting a CSV from one tool and pasting it into another. Analysts spend 40% of their time reconciling records that should never have been separate.
Merchant record drift: three tools have three different truths about the same merchant. The one the regulator asks about is always the one that hasn't been updated.
Governance debt: rule changes happen in Slack. Policy changes happen in email. When someone asks for the audit trail, you get a Google Doc.
Talent churn: your best analysts leave because the work is 60% swivel-chair.
Add it up and the 8-tool stack costs 3–5× the sticker price. That is why the market is consolidating, and why merchant-centric operating systems win from here on.