In some ways ryr/OAA and ezy/ctc now form an unofficial "apprenticeship" arrangement available for jet operators throughout Europe. Although many Airlines do take rated/tp/ex mil etc it is interesting to note the amount of new hires follow the path into ryr and ezy via the big schools, that then push on to other operators.
From the airline perspective, and should the number of leavers be manageable then it could provide an on going revenue stream, for sure the schools enjoy the benefits of this movement of labour....
My own opinion is that this well trodden path has in many ways absorbed the majority of the opportunities for the the traditional "varied experience" path.
This route is primarily driven of course by the financials and not ability, which I suspect the OP is alluding to
Unfortunately as disappointing as it is, it is where The UK is at present (and EU), not just in the aviation industry but in all aspects of life.