This model works maybe for uses where small value transactions aren't worth the cost or hassle, but that's not the (main) problem here. It's that payment itself

This model works maybe for uses where small value transactions aren't worth the cost or hassle, but that's not the (main) problem here. It's that payment itself adds a layer of complexity. And if the problem is that even simple payment complicates things, complicated (probabilistic maybe or maybe not) payment isn't going to make it better.