Companies soliciting big bounties should charge a fee to submit, making slop costly. Steam, the video game publisher, does this. Developers need to pay a fee to list their game, and if their game sells sufficient volume, the fee is returned. Creating a separating equilibrium here is not hard, the hand wringing is weird to me.

adding cost to accounts is handy, but its not like that has solved steam's scam/slop problems.

fake games by fake studios played by fake players is still a thing