But when you cherry pick companies and statements to prove a point that you know isn't true it negates your statement.Activision/Blizzard is a massive publisher/developer, so that totally wipes out your assertion that PC gaming is niche. Also, several other developers score high profits from PC gaming. The fact of the matter is, that PC gaming is constantly expanding, and hasn't been "niche" for a long time now, so get with the times already.
Activision makes a ton of money off of WoW. With it's stable 6-8 million subscribers it alone brings in about a billion dollars a year. Over watch might have a larger presence on PC. But that is where it ends. Everything else is lead by console sales to point that's insane.
Steam is still the leader in Indie and near Indie releases and its the one occasion that were the PC release makes more money. PC plainly isn't the market to Target AAA games. Sure you can't ignore it but it's a long way from being a primary money source.