That's exactly when there appears a market for building CRT's to order and to size, when they become economically viable again. It's like when vinyl pressing and/or cassette tape recording machines were pulled out from storage again.

It's not so much a matter of the art being lost (well, for now), more of things not being economically viable.

There's also a guy somewhere who's stocked up on diskettes and drives, there's still a large amount of devices that rely on them (e.g. in manufacturing, think stuff like weaving patterns and the like)