The thing is that PCs and consoles are both very different and have very different value propositions. Individual people
have different preferences for video games, genres, the types of input controller(s) they wish to be able to use with their system or a specific game, and an endless number of other preferences, likes and dislikes. There is no right or wrong preference, just what the individual's own preferences are. Since everyone has different tastes, the industry produces different platforms and products to appeal to the different tastes of consumers and no one video game platform will ever completely dominate the entire industry likely because some of the very things that one group of people absolutely love about one platform may be exactly what another group of people do not want and you end up with mutually incompatible desires that can not be resolved within a single product. For example, someone might love flight simulators or even a specific one such as Orville's Ultra Flight Simulator 2014 and have bought specific flight hardware, head tracker, rudder pedals and other devices or gizmos. That application may only be available for the PC, or might only be available for the PS4, and if he wants to play it he has no choice but to use the platform it exists on. There might be a flight sim on the other platform(s) but it might not be anything like what he wants.
There is no right or wrong in what he chooses to buy and play, just what is right for him, and as long as there are enough of like minded people out there like him to make a market that is profitable for hardware and games to be sold, the industry will produce it and each type of gamer can have the types of games, controllers etc. they want to have and use the particular platform of their liking for the things it has to offer them that they desire the most.
For me and my 700-1000 PC games that range from 1981 to 2014 and include titles on multiple digital distribution platforms, about $2000 worth of expensive USB input hardware (flight hardware, racing hardware, TrackIR head tracker, various other input hardware and devices) and 20 years of using the PC platform exclusively for all of my gaming needs and desires, I not only get everything I want from PC gaming, but I get about 500 times what I want or need out of it and then some. That is just the perfect match for me personally. There are plenty of people out there that it would not appeal to at all for their own reasons and different tastes and that's just fine with me. I'm glad the market provides us both with solutions that we can enjoy without forcing one of us to have to lose out and use something that doesn't give us what we want and I'm sure in one way or another the market will always provide us with these options so long as there is money to be made from it. ;)