The "play-for-fun" casinos successfully utilize the onboarding process to attract, and even create, the people most likely to be exploited by these games. Real-money, online casinos require a real-money deposit to get started, therefore, few people download the apps to begin with without being at least a somewhat-experienced brick-and-mortar casino gambler who is prepared to deposit real money.
Play-for-fun attracts casuals looking for the next Candy Crush or Bejeweled and might get a week of play (grooming, essentially) before even being asked for an in-game purchase. Further, specifically because play-for-fun is NOT gambling, they are unregulated and have no requirement to be fair or random. The developers can insert all kinds of manipulations and scripted outcomes that encourage more play and more importantly, more real-money purchases. They can amplify the payouts over time so initially, a few thousand coins is exciting, then tens of thousands, then millions. The coin purchases get more expensive as the player requires higher amounts to maintain their levels.
Lastly, it isn't like real online casinos aren't addicting or potentially problematic. Through 9 months of 2023, New Jersey online casinos have generated $1.41 billion, 65% of the brick-and-mortar casino revenue ($2.17 billion). And since online casinos and sports betting are growing much faster, they will likely surpass b-and-m a few years from now. Basically, New Jersey has created an army of addicts in a single decade, and many other states are following suit.
https://www.nj.gov/oag/ge/docs/Financials/PressRelease2023/S...
Why do we care so much about this specific form of people wasting their money? What’s wrong with letting people go broke the way they choose?
The good itself is produced by employees, has material inputs from suppliers, contributes to the economy in other ways.
I would say the problem isn't that it's a "waste", it's that the way it is sold is practically fraud. If the game was presented authentically as "pay $100 to click a button 100 times and watch some animations" then I don't really think it would be very addicting.
Why do you think people only care about this specific form? It's definitely one of the most discussed forms but I'd think that's mainly because it's a relatively novel medium.
I feel much the same way about betting shops, luxury brands, etc. as I do these "games". Luxury brands are often particularly detestable. It has become almost impossible to determine whether you're paying for a good quality product or just burning money. Even when of good quality, brands often go far beyond what could be considered moral. Hermes springs to mind in particular, convincing people to debase themselves in the hopes of being offered the chance to purchase an overpriced bag.