But then the People wouldnt pay for it over and over again?

People are way less willing to pay for updates than for whole new versions.

Apple and companies using Android are selling hardware, not software like Microsoft.

The problem with nightshade or similar tools is, that if you leave the changes it makes at too weak a setting, then it can be pretty easily removed. For example GAN upscalers that pre date modern “AI”, were pretty much built to remove noise or foreign patterns. And if you make the changes strong enough that they can’t be removed by these models (because so much information was lost), then the image looks like shit. Its really difficult to strike a balance here.

If you havent already, I would highly recommend you watch the following video by CGP Grey:

Rules for Rulers https://youtu.be/rStL7niR7gs

It describes why its so difficult to turn a country around from authoritarian to benefiting the people. Even with magical dictatorial power.