If any Etsy employees are reading, I am curious about why it took nearly 7 years to add direct checkout to the site -- Paypal is not known for being particularly kind to either buyers OR sellers, though perhaps there were all sorts of scaling/technical issues that took priority over something like this? It just seems like, with the amount of volume that Etsy does, Paypal's rates would be on the very high side. Congra…
Once you are in the business of accepting payments from some people and dispensing them to others, you are playing an entirely different game from a regulatory standpoint.
In my experience, the hard parts are getting initial approval from a merchant/bank and dealing with fraud. But I don't know of actual government regulations.