I'm not sure how you come to that conclusion?
Might I ask how one would justify such an assumption, given that the vast majority of PC gamers are the ones who play MMOs and MOBAs, and the rest who don't, play AAA console games, therefore it follows logically that if you're into those kinds of games you're likely to also have at least one of the three consoles.
But it doesn't. The people that play AAA games on console while playing MMO's and MOBA's on PC are generally those that don't have a PC powerful enough to play more AAA games. I have plenty of those in the FFXIV guild I'm currently in. They play FFXIV and LoL on PC. And everything else on console because their PC is bad. I consider them console gamers. A PC version of a AAA console title won't detract from the console game sales. This also extends to some other RL friends that still play EQ2. They play EQ2 or Rift or LOTRO and maybe a MOBA or two on their PC and everything else on console. A PC Version of a game on console will not lead to a loss of sales of the console version because they aren't ever going to buy the PC version. Oh, and that FFXIV guild has a few PS4 only players. I expect as more MMOs make their way to console, less of this category of people will play them on PC.
Likewise you have PC players with beefy PC's capable of playing all the latest games. Those players rarely, if ever, touch a console. Consoles are beneath them. It doesn't matter if the console has an exclusive that looks fun. They aren't going to buy a console. The only way they'd ever buy a console is if PC gaming didn't exist. In other words, a PC version of a game again won't diminish console gaming revenue because they were never going to buy a console game in the first place. The PC version is almost purely additive.
You're comment about PC hooked up to the TV I didn't really understand what you were getting at there. I have my PC (i5 + AMD R9 280x) hooked up to my TV and I also have a two consoles. If you like console-type games then you're more than likely to have a console, whether you have a dedicated gaming PC or not.
Which leads me to the thing that seperates most PC and console gamers. Gaming in the living room. People that prefer to game in the living room or are on a budget tend to be console gamers.
People that play on a powerful PC generally aren't gaming in the living room and certainly aren't on a budget (or at least the same sort of budget as console gamers, by and large).
So, what subset of PC gamer's detract from console sales? Mostly the few that actually connect their PC to the TV (rare) and have a PC connected to their TV that is powerful enough to play all the AAA releases (extremely rare). And then you have the occasional odd-ball that has both a powerful PC and is well enough off enough that they buy a console to play 1-2 games (exclusives) on it per year. Again, not even remotely close to be a large segment of the PC gaming community.
Many PC gamers are console gamers who already have a powerful PC for work/other reasons. Very few people actually build high gaming desktops these days, and so this market is pretty irrelevant to both MS and the overal PC gaming market. Point is, you don't need a massive super powerful gaming desktop to play AAA-console games these days. A fairly good laptop will do for most who game on PC, and these are devices most people already own.
Sure, but in your example with people with MMOs and MOBAs, many of them are playing on 4-8 year old computers which originally only cost 500-600 USD. MMOs with all graphical settings set to low. And MOBA's don't need anything more than integrated graphics. Neither of which are going to be able to run Assassin's Creed Unity, for example. Yes, there are exceptions. People with beefy rigs playing them (like me), but also like me, they buy all their AAA games on PC and wouldn't even think of buying them on console.
I was one of the people that was well off enough that I bought a console just to play 1-2 games a year on it. But now, I'm not even willing to do that anymore, with the exception of handhelds.
Even back when far more console games never made it to PC and far more PC games never made it to console, you didn't have a lot of people gaming on both PC AND console.
The one timeframe where there may have been an exception is when the original XBOX launched. That one convinced many formerly PC gamers to give consoles a try as many of their PC developers started to make games on the XBOX. They gamed on both up until the time they had to upgrade their PC, at which point most of them stopped gaming on the PC.
Regards,
SB