>> Planes didn't replace ships. Ships travel was always for the rich

Not really :) - My parents traveled by ship between the UK and South Africa in the 70's. And they certainly weren't in the "rich" category, and it wasn't a "holiday cruise", it was "how to get from here to there".

>> Cars replaced horses.

Exactly my point. There was a huge industry around horses (stabling, grooming, farriers, vets, cleaning the streets etc) and all that went away. Yes there were new industries (mechanics, panel-beaters etc), and that's the point. Change happened, and people adapted...