Without the cities with their Bistros, the very high level jazz that was created in the past will not be forthcoming. There will be some kind of music they call jazz, but it will be like fast food as compared to dining at a fine restaurant.
I recall a Bistro that I went to every weekend in the 70's which had a band that utilized a "Kalimba" in place of an electric piano. They played music similar to Herbie Hancock's fusion, but with a twist; they put a little jungle in the music, and I was spell bound every weekend.
Right now I'm trying to find an example of that music, but I doubt if I'll be successful. Here is a demonstration of the instrument.
https://www.youtube.com/watch?v=sefwUVRLrq8
For those who only like "Straight ahead jazz", the loss of cities and Bistros might not be much of a loss as far as the music, because so much fine straight ahead jazz has been created in the past, but for those of us who lust for something new, that is of the same quality of new sounds that were created in the past, I say just enjoy the past because the future is most bleak.
https://www.youtube.com/watch?v=5fAAGheYTFA
https://www.youtube.com/watch?v=dZW0Gg_42nY
https://www.youtube.com/watch?v=VPc59Y7KHqg