Having said that, earlier this year I was offered a hold pool position with the promise of a VERY lucrative contract, that would provide the kind of financial stability and hours on a popular jet that my current position doesn't even allow me to dream of. Catch, you have to pay for TR. I could definitely see why some people would take the gamble and do it.
The issue will always be though, you get those who can afford. If suddenly everyone said no to paying for a TRing companies wouldn't go out of business, they would just have an increased training cost, and a lower profit.