Of course, if we succeed, he will share the same fate as Tuchel, but I think Bayern does not have the strength to not be champions in the league for another year. The management may face a huge reaction. Naturally, there were people who criticized Kompany when he joined the team. He doesn't have a bright past as a coach, so the fans wanted to see one of the more successful coaches. The management took a big risk. Kompany must do wonders at Bayern, otherwise this may lead to reasons that will change not only him but also the management.
I do agree that if Kompany does badly, he will be fired easily, and it would be easier to fire him, because everyone thinks that hiring him was a mistake to begin with, so firing him would be something that everyone would agree with in the end anyway. I believe that the best thing to do in this case would be watch closely how things are going, and if they see it going badly for even just a month, they could fire him.
This needs to be done quickly though, because they have very few people in mind they can get. I still think it was a mistake firing Nagelsmann to be fair, he was doing fine and his transfers were great too, I believe that his player selection was better than Tuchel and will be better than Kompany as well.