Unless the B10 and SEC set up this super conference deal, then the B12 will be fine. The money that the B10 and SEC is getting will stop being important for football and basketball, there is a limit on how much you can improve the facilities then it becomes overkill.
Now if either conference uses their new found money to use in NIL or increase the number of scholarships that they are given out, then that changes everything. Until either happens, and as long as there is a path to the playoffs for B12 schools, I see very few getting an invite to either the SEC or B10.