From the https://immunefi.com/leaderboard/
#1. 4 paid reports: $13,010,000 total earnings
#2. 2 paid reports: $10,020,000 total earnings
#3. 8 paid reports: $8,010,000 total earnings
If these trillion dollar companies messing around with your personal information was an existential threat to their business, they would pay comparably with crypto companies.
But taking an ancient bounty and multiplying it by an exchange rate from years later would definitely be silly.
Yes, but you have to go through a KYC process, and of course pay your taxes. (In the US)
It also depends on which country you're in. There are a lot of OTC desks if you know where to look.