[peterfirefly]

It might even be Tesla again.

Somebody, somewhere will make an electric jet that is good enough. It will be very destructive for the old manufacturers, for old airports, and for many airliners. It won't need the long airways we are used to so we will likely get more point-to-point like travel to/from city centers (multiple sites for bigger cities).

Longer-distance travel will still remain the remit of traditional jets -- but they will have a much smaller market so there won't be much R&D, except through state subsidies and military contracts.