Spying on people is just generally creepy, I don’t know, but I bet if I was hanging around outside in your bushes with some binoculars, you’d have some entirely reasonable questions for me.

It is also bad to contribute to this ecosystem, you and I might be boring people with nothing to hide. But, there exist lots of vulnerable people out there, and we should not provide a market for services that make it easier to infer things about them.

Unfortunately it is hard to compete with “free*.” So, these spying companies have gained a dominant position in the market. It is, I think, generally accepted that it is fine to regulate entities with dominant market positions.