Companies like King, the owner Candy Crush, make millions of dollars .99 cents at a time. I'm not sure that gambling corporations are ready to learn that lesson. They long ago dismissed the idea of making a little from a lot of people when they banished $5 blackjack tables and .25cent roulette from just about everywhere.
That model works for Candy Crush because it's an
App. The problem casinos no doubt have with $5 blackjack and microstakes roulette is that they need to pay a real live human to deal the game and then make profit on top of their wages. To run those games for a lot of people, you need to pay a lot of dealers.
Some casinos have adjusted by fiddling with the rules of the game - my local casino still offers small stakes blackjack, for example, but it runs with a very player-unfriendly rule set. Among other things they've shaved the payout
odds on a blackjack and a dealer 22 is a standoff, not a bust. And people keep playing because the average punter is, let's face it, an idiot
They've also adjusted with things like "rapid roulette" where the ball spinning process is mechanised (or sometimes computerised) and bets are made with touchscreens, not chips, so they can get in more spins per hour.
The truth is thought that you can install hundreds or even thousands of those tables, and the casino will still live or die on what it takes from the whales playing in the private salons.
As for "skill-based" games, surely what you mean is games that have the
illusion of being skill-based. Because if it was possible to win at them by being skilled, the casino would never in a million years offer them. And if you can't win at them no matter how "skilled" you are, then skill is really a non-factor.
If what you mean is that there's a new generation of gamblers who want more
interaction in their games than just pressing next spin on a slot machine then you may have a point.