Eye for an eye makes the world go blind. Gamers have set a precedent for console distributors to charge for simple P2P gaming. Look at the year to year revenues. It's not Microsoft's fault that Sony is looking at that revenue in envy. It's the gamers that is feeding into that revenue.
And yet the ultimate decision was on Sony. They made that call. They didn't have to, just like they don't have to lock Netflix behind a paywall. I don't personally mind the paywall because PS+ was worth the money anyway but I'm not going to make excuses for them. They saw that money and said "I too wish to make it rain".