[6gvONxR4sf7o]

It depends on the kind of shoot. A picture for a catalog is going to be much cheaper than a picture for an ad. The reason isn't just the model's time, it's all the other work that goes into it. A picture for an ad, all things considered, can be surprisingly expensive. So the catalog images are easier to do digitally and the ad images have a larger incentive to make cheaper. If you can replace enough of the pipeline, you can save significantly. The model is just a part of that, but they'd still lose their job. Even the simple catalog work where you might digitally change that solid red t-shirt to blue and green and orange saves time and means fewer models are needed, shrinking the job market.

[WalterBright]

You can already see that on Amazon when buying a shirt. Just push a button and the color of the shirt on the model changes.

[fock]

most of the shirts I see on Amazon actually don't have a model (or are rendered already)