There are several issues with this. The main one is how can people trust a product that will let them lose money in the name of growth. The second one is that

There are several issues with this. The main one is how can people trust a product that will let them lose money in the name of growth. The second one is that the more money, the more incentives to hack. And given that transactions are irreversible, you only need each bug once, you don't care that it's fixed later. So if a bug can report a hacker millions of dollars, there's going to be quite a lot of hackers researching, probably with more effort there than the effort put in best practices, audit and formal verification.