Though from that which I have observed, Morgan owners (myself included) may have evolved to become less interested in getting involved with their machinery than they were perhaps 20 or more years ago, so the trads may also die out in a way that was never expected before..hmm..?
Interesting observation. I hope you are wrong but, sad to say, I rather suspect that you may be correct in this prediction.
Not helped by the insurance companies various "Cat x" which even if they allow a repair, comprehensively trashes the resale value.