If the Obi-Wan series doesn’t galvanize the public’s interest in Star Wars, then the other random future TV series that KK and Disney announced (Andor???) will be the final nail in the coffin.
Well, at least for another decade or two until they reboot things again.
The Obi-Wan series has a lot to juggle with keeping the OT and PT fans happy, and the fans of both trilogies. It will probably have to be a very ambitious series to tackle, appease and maybe even attempt to unify these fan groups. And also be a separate story on its own two feet.
The general public will probably be happy with anything Star Wars. Much of the public liked the Sequels going on ticket and home media sales. If Disney+ subscriptions are up, and the general public mood or buzz is good (outside of us fanboy nerds, and on the side of the coin of online fans, TFM) then they’ll happily continue. Other Star Wars film and series are already in development and nearing production, and Disney won’t probably stop the gravy train for a mishit show or two.
I agree there’ll likely be reboots anyway soon enough! Another 10 years and it will “Episode X: The Search For A Compelling Villain - Palpatine Has Returned Again!”