Consoles used to operate on network effects and exclusivity deals. If you wanted to play halo with your friends, you had to get an xbox and vice versa. It's not clear how you fix that with antitrust.
I think PCs have won for gaming in this century simply because of their ability to multitask. The modern gamer has discord and twitch and like 10 other social media apps open. The viral nature of games is key to success. Many (the most successful?) games like minecraft start out as PC-exclusives due to the additional hurdles associated with distributing a console game.
Consoles tried to make a cash cow with subscription services, and succeeded for a while, but eventually the whole sub-industry of console gaming kind of lost its edge and croaked. There are hardly any exclusives, hardly any network effect so the unique selling point is gone.
It reminds me of how bell labs missed out on the mobile phone because it would not take advantage of their existing infrastructure. The more companies try to tighten their grip on a market, the more inevitable their failure to evolve in the long term.
If we are talking about printer companies, the more they build their business around restricting and selling ink cartiges, the less they will be able to adapt to new tech. When the next new thing rolls around (IDK printable holograms or something?) they will suffer because it won't mesh with their ossified business model