I played it a lot of times and got some coins with it too. Guess it was Digibyte (DGB) that has done implemented earnings when you playing Counterstrike !
It was realy funny and nice so it was possible you can play your favorite game and at the same time you got rewarded for if won some Matches.
And also i guess there was a few more Games on the Site where it was possible to get some rewards of DGB when you played them .
But i cant remember what for other games it was , Counterstrike was one . Sadly that they got some issues with that and they deactivate it at some Stage.
Dont know if that is possible anymore or something.
Yes, it is still possible, and, in fact, the industry is growing. Just one example, Kuro Takhasomi, 27 years old, earned more than $4 million playing Dota 2. Also there are kids under 20 earning hundreds of thousands USD through their skills in video gaming. Google about eSports to read about this growing industry with over $1 billion yearly revenues. Also maybe check out the page from the link below
https://www.esportsearnings.com/
to see how much some individuals earn playing games like Dota 2, Fortnite, Counter-Strike and others.
But, answering the OP's question, I want to say that there are different kinds of people. I, for one, don't like playing video games at all, but enjoy playing poker, dice and some other games like minesweeper, plinko etc. Asking people like me, "Why don't you play video games instead of gambling?" is the same as asking people playing football, why don't they play tennis?