UK INSTRUCTORS
In short, yes!
Why...
1) Cost 20K Nett for an FI course; remuneration circa £55-60 per flight hour, although I have seen one organisation recently offering £100 / Hr, but this is uncommon. Financially it's challenging to justify it.
2) A over-burdensome regulatory regime and an authority with employees who can't wrap their faculties around the fact there's more than one way to do something to an acceptable standard.
3) General consensus of some of the more established FI's around the industry appears to be a feeling of "What's the Point", because they're tired of the onerous paperwork and the constant fighting against the regulator.
4) Probably fair to say that the availability of Multi Engine Instructors (Except Maybe H135 fleet) is limited, and the cost barrier to obtaining the more advanced qualifications such as TRI AS355 / TRI AW109 means there's no-one coming through the system.
5) Inconsistent work patterns does not lend itself well to family life.
Just my tuppence worth.