PC gaming never went anywhere, we were here from the start and we are still here. No point trying to say anything has changed when PC is the same as it ever was. There is no evolution, people who want to play on PC do so. People who refuse to play on PC, don't. Those who don't, play on consoles, and they are a big audience that spend a lot of money.
PC gamers are harder to please, demand more, and will abandon you the second you piss them off. Console gamers are just easier to get money from. The fact that Xbox failed to get money from that audience is just proof that they suck at it.