1. It can still take a while before Google finds out
2. You can log every mapping you got in the meanwhile, then keep selling the ones you already have
Edit: although probably most of your business will be over when word gets out that your data isn’t exactly legal (which your clients have understood from the start, of course; they could just plead ignorance)
So let's suppose that you did set up the service like this. Can you even make 10 K? What are your odds of getting caught? How much do you value not being in prison and/or having to hire a lawyer to get you out of there?
I'd take the 10k every time.
It’s a lot more work, of course, but you can scrape some top youtubers first as it seems relatively easy. If you can pull this off you can then try and figure out how to legitimize your offering – I won’t go into details here, for obvious reasons, but now that you have something valuable on your hands it makes sense to spend some time/money on selling that.
I’m not speaking theoretically, which I suspect most on this thread are.
Even if someone on telegram was telling me that Russia would buy this information for $100,000, I think I would reach out to Google and "settle" for $10k.