Decentralization exchange was never in the picture as that'll be impossible to pull off. Everything about paypal points to centralization and if they were to adventure into the exchange industry theyll be doing it the centralized way and been more strict than what we're currently experiencing with other centralized exchanges.

There's money in the exchange business and that'll be one of the perfect avenue to profit from the industry which is what paypal is just after as their recent move is just money motivated and not to bring about development to the Industry but still they'll be bringing that indirectly.

Already they're becoming an exchange, you can buy multiple alts and not just Bitcoin, with time they'll realized they can make more profit if they introduced new tokens and slowly they'll turn their platform to a force in the exchange industry.