I have always said there will be room for the career instructors, teaching ME, IR, CPL ect. Ok
There will always be a requirement but, where will they come from? If we can service the recreational industry with PPL instructors, what incentive will there be to pay the additional costs to do the same thing at commercial level, especially if the MPL takes off, and all commercial single engine instruction will become a glorified PPL. There is already an issue finding MPL instructors with 1500 hous MP operation, who will be prepared to work at any time day and night in Simulators!