Because these problems have never been dealt with. We scold victims and sell this "individual responsibility"/"bootstraps" bullshit to avoid doing so. Some of us create these products that actively fuck with people's ability to make decisions well, and then we yell at those people and tell them to act right.
The only difference now is the Internet both makes it frictionless and therefore so much easier to do, and the Internet also then let's us see into the lives being ruined in the process. But the problem remains exactly the same: if you, as a person, have no ethics and see no issue in causing misery at scale, you can make a LOT of fucking money in our society. And not only will you likely not be charged, now they'll probably call you an innovator and put you on a magazine.
And then we wonder why everything is getting worse all the time.
And before anyone tries the gotcha with me, no I do not work at any firm like this. No gambling, no social media, no recommendation algorithms. The company I work at comes by it honestly: we sell solutions to problems people actually have. And no we're not worth 66 trillion dollars but, we can all sleep at night. And that's not so bad.
Practically any entertainment product is going to have problem users(food products too, along with alcohol and other drugs).
There are people who play video games to excess or watch tv to excess and it is harmful to them, but that really needs to be balanced against the vast majority of users that exercise reasonable restraint. Its just not a fair justification to ban things that 99.9%+ of users are about to operate responsibly.