It’d be dead easy, actually. Don’t even have to actually ban it: For image generating models, every artist whose work is included in the training data becomes entitled to 5 cents per image in the training data every time a model generates an image, so an artist with 20 works in the model is entitled to a dollar per generated image. Companies offering image generating neural networks would near instantly incur such huge liabilities that it simply wouldn’t be worth it anymore. Same thing could apply to text and voice generating models, just per word instead of per image.
Microsoft abuses their de facto monopoly to engage in gross invasion of their users’ privacy, and continues to try to wrest their users’ control of their system from them by altering system settings after updates, and making some settings nearly impossible to change. And that’s to say nothing of MS’s attempts to turn their operating system into and advertising platform.