The bricklayer's wall could become part of a very valuable property in the future (say if the area became highly desirable), or it could be subject to a natural disaster and fall down. Just like the model's pictures could end up everywhere, or in the bin. But they take on none of that risk.
I reckon a model wouldn't do very well at all with taking the risk. A photographer could probably get through a hundred models in a week and bin 99 of them without giving them a penny.
Some professional photographers stage scenes with hundreds of nude people in them?
Seriously though, it's just math.
Less math, more arithmetic with spherical cow assumptions.
I'm not sure who will want to discuss licensing rather than getting another person who needs money immediately and won't ask so many questions. Assuming they'll even bother with a model rather than an AI setup fixed up by a contracted graphics person.
I do not understand why people think this is bad though, that’s just how the market value of services is determined.
https://en.wikipedia.org/wiki/Residual_(entertainment_indust...
It would be like a bricklayer not taking any payment until the house was sold and therefore taking on the risks associated with the housing market. Most probably wouldn't want that. You can't have your cake and eat it too.