Wire12,
let me repeat what I wrote in brief: Having decided to sell typeratings plus line training to aspirants, what would make any company keep its trainees while there still is profit to be had from other aspirants?
Nothing, thatīs what.
Many reputable airlines do require fresh joiners (that have passed the applicable selection beforehand!) to sign a bond of some kind in return for their type rating, such as "You will pay amount x for Your type rating, and we will refund You 1/y with some interest annually over the next y years". Does this match Your definition of self-sponsored type rating?