Those Kiwis old enough to have seen the nine films in the studio or shortly after release in other forms (video, DVD, etc.) could probably share plenty of firsthand stories about the anticipation and excitement surrounding news that another SW film was coming out. For example, I think half my sixth grade class couldn't wait to order the book version of
Return of the Jedi once it was an option in the monthly book sale thing our school participated in. Once we got our copies, our free time was abuzz with discussions of favorite scenes, surprises, and a key difference between the hardcover and paperback version (
The former showed Luke's head being zapped by Palpatine's lightning whereas the latter had Luke edited out -- possibly to keep the image kid/PG-13 friendly).
In short, there was plenty of excitement because much of the audience (children) had no concept of trilogies and liked news about a great, fun, awesome, etc. film coming out with another installment for lack of a better word.
I still recall plenty of buzz when Episodes I & II came out, even if the prequels had their issues. Sure, every film has them -- even favorite ones -- but older fans tend to look at films more critically and be more aware of on-screen things that just don't feel right... the stuff they wouldn't be aware of as kids due to their youth. While I can't recall too much of a fervent buzz over Episode III, perhaps that's because the ending was obvious even before the film was released and people just wanted to see how that ending played out.
The ST, however, seems to have buzz that faded drastically with each film's release. TFA generated enough because people wanted to see Disney's first stab at a SW film. Many were alienated by its being a retreat of ANH, but some still waited to see what the next film was like. TLJ, however, killed a lot of long-time fans' interest with its horrid story telling and lack of cohesion with existing SW lore and (most importantly) the previous film. Apart from diehard fans and the usual shills, I've yet to see anyone unironically interested seeing Episode IX.
TL;DR - Disney not only killed the franchise, but has consistently killed off fan interest in the short time it's owned the SW IP

. They'll be hard-pressed to win back fans further alienated by Episode IX even if their next SW work hits a home run.