Using Stripe etc. adds another point of failure.
But yes, the fact that essentially all payments are bottlenecked through two vendors with no legal supervision is quite troubling.
Maybe we should form a co-operative of payment recipients? It doesn't need to operate anything, but rather be a "suicide pact" that will extoll a high price from payment processors if they try to unfairly ban a business. Some sort of a smart contract could guarantee fair enforcement.