I'm not so sure.

Centralization (on Binance) made the attack appealing, but decentralization (of crypto broadly) is the only reason it's possible, and centralization (of USDT et al) is the only path to recovery.

Re: the marketplace: we'd want to be able to revoke teacher access too, and sometimes we may need to roll back transactions (Goods not delivered? Wrong goods delivered? Wrong goods purchased?), and then I have to ask... why involve a blockchain at all?

The only compelling real world use case I've seen is helping people navigate hostile governments or dysfunctional economies.