Bright Data's business is legal, but they could be subpoenaed to find out which customer is making these requests, but first you would have to prove they were actually involved, because there are many residential proxy providers.
Sometimes the first step of a lawsuit is discovering who you're suing. It's not unusual and there are processes for it. You could bring something like an access log to a court and receive an order for all ISPs involved to unmask the corresponding users.
Indeed. The solution isn't technical but legal. It's clearly abusive of - really stealing - other people's resources; there's no question about it.
For some reason, like with fraud via email, text, and phone, we don't do anything about it. All this brazen crime and government does nothing; we don't even imagine government doing anything.
> You have the power, and should exercise it, to rate limit bad actors
It's well known, and it was the point of the OP, that we don't have that power. If you know a solution, please share it - the world would love to hear it.