They operate at such a low overhead that it’s like expecting spammers to remove your email because you black hole them.
And likely even if they DO move on, there’s a thousand more right behind them having bought a “get rich quick” kit from someone.
For some reason they either didn’t notice (e.g. there’s just too many people trying to get in on it), or did notice, but decided they don’t care. Deposit should help here: companies probably will not do it, so when you see a project requires a deposit, you’ll probably stop and think about it.