The most likely threat is a surplus of pilots while aircraft are grounded due to the fact that there are far too few licensed engineers, and corners simply cannot be cut any more to manage the increasing shortage, as is presently done.
Would you, as pilots, train while working for 5-10 years, get a difficult professional qualification, just possibly quite a lot more difficult than your qualifications even, and then work for £35-£40K or the equivalent - or much less - in EU, USA or anywhere in the world, all-in at all hours of the day and night?
Thought not; that's why no-one wants to be a maintenance engineer or mechanic.