Paypal had several opportunities to implement cryptocurrencies already, i think that they would have done it by now it they would.
They had plans, but are legally restricted from doing so. But if American regulations change to allow them more leeway, I am sure they will. Look, Europe wants to catch up to USA so they are not going to regulate crypto to harshly, in fact they are more inclined to subsidize innovation. USA cannot let that it happen that Europe gets ahead. Eventually either Europe is going to tighten or USA adopts a looser policy.