They would attempt to place limits on training/recruitment
Isn't this the practice of some professions for which they have been roundly condemned and which Governments have moved to ban? Tell me, just how do you propose to implement such limits? In the market economy, just as night follows day, there will always be those who pay money to achieve certain goals and those who will accept anything to achieve their goals. Aviation is not any different.
Roger's analysis is correct. RENURPP's comment about "
GREED" is also correct - just look at the mindset of some of the unions at legacy carriers who are fighting like mad to hold onto their outdated and inappropriate Ts&Cs. While not naming names, you don't have far to look.