People are willing to sacrifice an enormous amount to work in _Entertainment_.
Games, Music, Movies, TV.
Its hard not to exploit people when you have constant stream of candidates begging you to work for exposure.
Here is an example casting for Netflix "TV" show, Hyperdrive, https://www.youtube.com/watch?v=cHR66Isz3Ug where whole driver compensation amounted to 2 weeks hotel stay and plane ticket. No damage coverage (cars in $0.1-1mil range), no car prep allowance, no per diem, no insurance, no contest prizes. Produced by a woman too, Charlize Theron.