Of course gaming is 20-billion thing. That is because there are people happy to pay for their games.
Of course people are going to have more time in the future. Those who also have money will be able to spend more and more.
Of course you can be a professional advertisment watcher once the companies decide to reroute ad space money from stadiums to videogames.
The one thing article/comments are missing is: People have been Playing2Earn for centuries. Fun fact: They needed decent winrates to do so.
Putting it all together: If we are playing, and noone seems to be losing money it is a good time to look around for the guy that throws the banknotes in the middle. If he is there, we are good. If you cannot see anyone, losing the money is postponed to the moment when the bubble bursts.
Gaming is not creating. It is moving (a lot of) money and/or attention around but it is not a free market solution to distribute what the robots manufacture across the humankind. With or without a big company it is a funnel taking from many giving to few. P2E just rearranges the receivers a bit.
If you know when to sell, you can earn. I am not saying now is the time, but I know the expiration date exists.