Nothing really stopping local community members from being a custodian and being an LSP or using fedimint to give users easy access to Bitcoin, and that trust is handled by the fact that you know that person, and you can vet everyone you custody for so the trust can go both ways, but its not exactly scalable

If you're looking to be a custodian at scale, where your focus is on providing a reliable service at a profit, you need scale and to earn trust you become an entity that people can find and sue, regulate, close down, its a business.

How many people are going to do business with an anon custodian? Very few if any to make it worth anyones time.