The reason why Bayern Munich hired Vincent Kompany was because they he was the only one that accepted to coach Bayern Munich after the coaches that the management contacted did not accept to coach the club. Kompany is not a good with high coaching skill and he has not coached a big club.
It will be a big challenge for him coaching Bayern Munich and putting them back to their place in Bundesliga. However, if the players work with him he might be able to manage the club and come up with good results but it might not be next season because he needs time to succeed.
I think if Bayern are patient there must actually be several coaches who are ready to be at the Alianz Arena it's just that Bayern are quite rushed at the end of the season after seeing Tuchel's failure their focus is only on a few names which is actually a little difficult to force because seeing from some rumors that occur Bayern's choice is only to Xabi who has definitely refused because he still wants to be in Leverkusen, Nagelsmann who is still hurt and is ready with the Euro to train Germany and only Kompany is possible because of his situation at Burnley and the benefits Kompany has if he accepts Bayern's proposal is very large.
Bayern is a big club and it is very unlikely that no one wants it, it's just that Bayern's choice of finding a coach before is too narrowed down to a coach who is clearly very difficult to have.