Gambling is heavily regulated in most countries, often including requiring the odds of winning being clearly listed and regulating the profit margin that The House can take (usually limited to less than 10%)
Many casinos and developers of addictive games will hire psychologists and other experts on human condition to help them find ways to make the game more addictive and make it easier to seperate players from their money. These “dark patterns” both make gaming worse and make it more dangerous for anyone unfortunate enough to develop an addiction.
In short, I welcome regulation on the worst aspects of the game industry to keep the worst aspects from become too financially successful to not implement (see the $60 AA and AAA games that launched with lootboxes and predatory micro-transactions like this one about 10 years ago before some countries announced they were investigating regulating such practices)
My experience working support for a phone manufacturer has informed me that once an average user installs an app it tends to stay installed indefinitely, but they may or may not be aware it’s even installed. A gentle nudge notification of “hey look at me” every once in a while might very well be amazing for engagement