Probably not any laws, but the term and and conditions of those sites. When you sign up you probably agree not to use insider knowledge, or whatever.

If that’s enforceable, and if they have a case, I do not know.

What am I supposed to do?

Survive

On top you get to live a normal life. A make-belief life, but you’ll never know.

Skyrocketing / exploding numbers doesn’t imply a majority.

A number can grow significantly and still be a less than another number.