As somebody doing web development for a small business (run by my wife) selling courses online and using Stripe for payment processing, I am a bit concerned by

As somebody doing web development for a small business (run by my wife) selling courses online and using Stripe for payment processing, I am a bit concerned by this and other similar posts. So far Stripe has always run smoothly for us (FWIW, we never had a single dispute), but I'd like to have an exit strategy. What other other payment processors similar to Stripe you would suggest? So far I basically only care about credit cards (not other payment methods).