It's really not that dramatic. Just build it like more classic media. Curated content the company takes responsibility for, closed platform, pay upfront. Or have public programming, that is the oldest model there is.
Ad driven online content is especially bad for kids. But let's not pretend the only way to find an alternative is to end the world.
The fact is the "bad" solution is popular because consumers say they care about these things but then in real life they act like they don't. If no one watched the problem would solve itself. Thus, I'm not sure the solution is even to be found in platforms, if parents are burned out or don't have ways to make better choices for their kids.
That's a reason for these laws, to essentially just take it out of people's hands.
The consumer gets bait & switched. When ad-free pay upfront cable tv first started, people switched over. We showed that yes indeed we like ad-free shows and are willing to pay for them. They said, well that's great, but we can make more money if we show you ads so they did and we ended up paying up front and getting obnoxious ads. Then when online streaming started, we all switched over. We showed that yes indeed we like ad-free shows and are willing to pay upfront for them. They said, well that's great, but we can make more money if we show you ads so they did and we ended up paying up front and getting obnoxious ads. The moment it become sufficient popular and the people get sufficiently locked in, the ads come. Every time.