If Episode 9 fails, I suspect that's what they'll do eventually; but it will be years, if not decades, before people will be willing to give them another chance. Not to mention the fact that Disney will need time to clean house at Lucasfilm and plan ahead, so that the same issues won't plague the next iteration of the franchise.
Take a look at spiderman: 5 years between the Maguire and Garfield films, and only two years between those and the MCU taking over the franchise.
That's not a good comparison; the current controversy surrounding Star Wars is far more damaging to its brand than anything involving the Spiderman movies. There's just far too much bad blood; the fans who left are not going to come back any time soon, and five years may not be long enough for them to forget.
Spiderman also hadn't proven it could be a good movie, it didn't have an established movie-going fanbase, and Sony could only minimally tap the MCU fanbase.
That's not my point.
Yeah, that kind of thing just doesn't happen in well run, professional organizations, like Disney. Bob Iger is perhaps one of the greatest business leaders of this decade, he's tripled Disney's value in his tenure. You don't dress someone down like that in public. And you certainly don't threaten their jobs in public either. The very notion is absurd. This isn't the way you inspire creative types to work. Consider what the effect would be on you if you were present at that meeting. Likely you would be rightly worried that 'that could be me.' But what this inspires then is for you to look for an exit route.
It's not a question of money. If throwing money at a problem could solve the problem of finding good management and talent, then all management and creative problems would be easily solved. The problem is the supply of talented management and creatives is limited because identifying talented management and creative persons is hard. The list of producers/managers who have proven to be successful in producing a large, billion dollar franchise like this can probably be counted on one hand. And most of them are otherwise engaged. And of course, even if Disney was to sway say David Heyman (of Harry Potter fame) to come take up the reigns, there is no guarantee that he will be an able hand for this franchise. Indeed, Kathleen could be seen as such an example of this, as she had a fairly successful career producing a variety of Spielberg Films prior to this. And if an established hand is a risk, a person without this pedigree is an even greater risk.
Disney may be a well run, professional organizations; but Lucasfilm is neither of those things. At this point, it's a rouge division run by an egomaniac that needed to be reminded who exactly is in charge. I mean seriously; what about insulting and slandering the consumers of your product strikes you as being "professional"?
Be that as it may, it's just not how things are done in the business world. It's not like Bob Iger is like some sort of disapproving parent who's going to go, "normally we would handle this in private, but you've pissed off too many fans, so now I'm going to dress you down in front of all the rest of the management team." I mean, it's a nice fantasy, but not how the business world works. It's all about the bottom line, and actions like that are just going to hurt morale and shake the rest of the senior management teams faith in the company. And for what? It's not like it would 'scare Kathleen straight,' if you've already let loose that you want to fire her, but can't, what possible leverage could you have on her?
It is just a leak, so it's entirely possible that it's fake; still, your argument basically amounts to nothing more than "that's not how I perceive the business world to operate", so you'll forgive me if I take it with just as much of a grain of salt. Regardless of your perception, people are emotional animals, not logical machines; the simple fact that Kathleen Kennedy has become such a problem, and apparently decided to put personal ideology above profit, puts lie to you entire premise.