I didn't use a specifically named competitor. I simply stated "direct merchant account." Authorize.net is not a Stripe competitor, it's a gateway, not a processor.
Also, when I was in the UK, getting a payment processor (we had our own merchant accounts) pre-Stripe was a royal PITA. They wanted all sorts of documentation and proof that we were a "real business" before letting us process payments.
TBH, it seems like Stripe and PayPal are being pushed by "risk management" corporate suits into being unreasonable and treating their customers like United Airlines' passengers. A few years back I would ordinarily point people over to FeeFighters' Samurai to shop the best deals on payment gateways, but GroupOn decided to buy them and make them commit seppuku.