People can speak to the music industry and many other factions, but the modeling industry has and will be the worst thing going. Not only are models degraded, they put forth a bad fantasy of what people should look like. That, in turn., causes peer pressure on some to conform and attain the look or go the opposite way and rebel in some odd look. I think they hope promises will come true or that if they pay their dues all will get better in time. They are tossed to the curb much like trash and likely go through major mind games. Many become high priced call girls or boys for the rich and famous and are treated like the flavor of the week and then they're done and on to the next one. Once everyone has had a taste, depression moves in as they realize they need a sugar daddy or a real career and the thought of not being on top or good enouch kicks in. Sorry to be so glum here. And they sometimes call this glamorous. So, the shelf life is like, what, maybe 7 years max. True happiness is not always found at the top.
Who knows where they would be now...