You might think it’s an opportunity because you don’t see anyone else doing it. That’s because people have been doing trying and failing at this exact concept for at least 15 years.
There’s a deep and wide startup graveyard dedicated specifically to job sites with bounties/referrals.
There, I just saved you years of pointless effort. Expend your energy money time relationships and life on something else.
Unless of course you think you’ll be doing it right/better/different/with a twist/with better timing etc. in which case you must understand you should go straight to the very very large section of that startup graveyard dedicated to those who were smarter than all the others who tried, then pour your money into the next open grave.