And I thought that AENA had a monopoly in management stupidity!
When ANSPs are willing to invest in training a large excess of controllers then this approach might be an option but as the costs will be huge and any returns well into the future, I don't see it as an option. (Would the CAA allow NATS to make this sort of expenditure in the next control period?)
To get into the same position as airlines are with pilots, the ANS industry would have to market the job as glamorous so as to persuade candidate trainees to fund their own training. Somehow I think that might be a bit of a challenge.