Payment networks are where the network effects and scale are. Visa and Mastercard have been known to ban people for political reasons.
Payment providers are just a front end for their networks, so it's easy to switch providers like Stripe, but you can still be banned by underlying network like Mastercard and your business will suffer.
Payment providers are just a front end for their networks, so it's easy to switch providers like Stripe, but you can still be banned by underlying network like Mastercard and your business will suffer.