What are the challenges of permissionless contributions for training data?

I may have an interesting blockchain solution to help balance crowd sourced training data.

I’m sure data is hard to get in the first place. This method could also help get contributors paid. Based on a ratio of their share of space.

Or maybe in a creative space somehow incentivize users to contribute to the machine learning model by individually creating pieces of art or something.

The power of this particular smart contract is that it has the power to forcibly balance (through market forces) the ratio of influence individuals have to the collective. And I figured that could somehow be useful when it comes to getting good crowdsourced data.