The problem of jointly-owned AI is that the actual value of a particular contribution to the training set is not particularly easy to calculate. We can't tie a

The problem of jointly-owned AI is that the actual value of a particular contribution to the training set is not particularly easy to calculate. We can't tie a particular model weight back to individual training set examples, nor can we take an output that's a statistical mix of two different peoples' work and trace it back to them. With current technology, the only licensing model we can offer is "give us your training set example, we'll chuck a few pennies at you out of credit sales and nothing more". We can't even comply with CC-BY because the model can't determine who to attribute to.