I agree, though maybe with inflation some future movie could gross more on fewer tickets or something. :lolNo SW is gonna do what TFA did. After all that build up, years of it.
Well, there's the whole 'stopping the SW movie machine' decision. There's also the decision to hire JJ, not RJ to finish up the trilogy.
Solo's box office is what prompted Bob Iger to rethink the annual release strategy. I believe he even said as much.
JJ was hired to take over IX because he was available and Rian wasn't. TLJ wasn't even out by the time JJ was brought back onboard for IX. It would've been impossible for Rian to jump on that movie right then for a bunch of reasons, not the least of which would be burnout. Similarly, you don't see Rian moving straight from TLJ to his trilogy; he's doing Knives Out first to take a break in between Star Wars films.