Or people just don't want to pay inflated prices just so a payment processing company gets a nice % of every single purchase.
As I said in another post in this thread, I myself run a small business, and the vast majority of my sales are done through digital payments. I have no problem with this, but if I was to cut the payment platforms' fee, I could offer much better prices without having to take a hit on my margins (which themselves are sustainable and healthy, but not fantastic). It's not about me bypassing taxes, it's about providing a better price to my customers.