Again missing the point completely.
Nobody who sponsors City has a stake in the club unlike many of the various corporations that sponsor Bayern.
Many clubs around the world have close contacts whose companies sponsor them (City, United, Liverpool for example), but not too many are sponsored by organisations that part own them.
Overpaying Bayern for inflated sponsorship deals does help those companies as it increases the value of an entity (Bayern) that they have a stake in by increasing it's turnover and balance sheet value.
It also increases their chances of success in what is already a one team league which by default leads to a bigger share of the pot for prize money, even in a league that is far less lucrative than the EPL.
You have again failed to address the point about the vastly inferior TV audiences Bayern attract for Bundesliga and UCL matches when compared with clubs in the EPL which is the main attraction for sponsors who want global and not just domestic exposure.
Like you said, may as well leave it at this point as I'm basically pissing in the wind labouring a key point that you either can't or won't answer.
Just as an example...
You and 13 others own a supermarket. Would you overpay for your groceries in that shop - the other 13 profit from it in the same way you do...
That does not make any sense.
There is a reason why this companies invest into Bayern - they can make profit of it as the footballing companies have improved in their value over the last 10 to 20 years and to be ahead of competitors of the own branch, when it means sponsoring contracts with the club. The Bayern fans even think that it is even a disadvantage for the sponsoring contracts and we would get more out of the sponsoring contracts when there weren't any affiliations between the club and the companies.
Bayern's sponsoring contracts aren't overinflated. It is mainly German manufacturing companies advertising with the biggest German footballing team of the biggest economy in Europe in the World's biggest sport. And there is different manufacturing companies of the same branches competing with each other.