I think one of the reasons Solo failed to meet Disney’s expectations is because they’re starting to rely too heavily on nostalgia.
As I’ve said, I legit have nothing against reboots or remakes but it’s been proven that nostalgia can’t be your only selling point. There are a lot of nostalgic properties that bombed at the box office because they were badly made. Jem, Robocop, Stepford Wives, The Wolfman, Psycho, I could keep going. Heck, the current Winnie the Pooh movie isn’t doing that well either.
Like if Disney wants to continue with the SW franchise, they have to make good products. Nostalgia can only get you so far.