While I agree with you in general, I see no way to actually sensibly enforce this. Whatever activity you take, it can be abused.
For example Google is abusing their position by feeding a stream of right-wing and related stuff to my mother because she clicked a Trump video a friend(?) sent her so that she watches more of this stuff, gets more negative emotions, and continues to spend her time on their site. Trying to regulate these things is terribly hard and whatever idea you come up with, the folks at big tech will find a way to go around them.
For example Google is abusing their position by feeding a stream of right-wing and related stuff to my mother because she clicked a Trump video a friend(?) sent her so that she watches more of this stuff, gets more negative emotions, and continues to spend her time on their site. Trying to regulate these things is terribly hard and whatever idea you come up with, the folks at big tech will find a way to go around them.