Somebody else holds a decision over your business.
A sponsor bank, a processor, a regulator, an acquirer. Eventually each one says the same thing: show me.
Most fintechs cannot show. They can explain, they can send a policy, and they can spend three weeks assembling something by hand. That gap between explaining and showing is where accounts get exited.
The FDIC proposed a custodial recordkeeping rule in October 2024: beneficial-owner records, direct bank access, independent validation, an officer-signed annual certification. It was never finalized. Banks wrote its substance into their partnership agreements anyway. The rule never passed. Your bank adopted it anyway.