the Merchants quickly started to accept Bitcoin as a payment option... even the large food chains like Mc Donald and Burger King. 
They didn't just started it themselves. They were forced to accept it. That's kinda against what we, as community, support. We don't want to go off half-cocked with the adoption. Whoever respects what bitcoin has to offer is welcomed to allow it. Was thinking more about PayPal and various Bitcoin payment cards on Visa/Mastercard networks, as well as some custodial wallets.
There are? What's the point? There's a lightning network standing there...