One note about athletic revenue that should cause people to take it worth a grain of salt: you really have to look into those high level numbers a bit more. For example, last year Illinois had $146 million in total revenue last year vs. Iowa's $151 million ... is Iowa "more valuable" in this regard than Illinois? I would argue definitely not. Iowa had over 1.6 times the ticket revenue that Illinois had, and they were both very close to one another in total because Illinois had $40 million in contributions vs. a little over $30 million for Iowa. Considering the string of great football Iowa has put together for over two decades and the HUGE room Illinois still has to grow if Bret keeps winning and we are consistently getting over 55k in the stands, we would quickly overtake Iowa.
Conversely, Indiana had total revenues of $167 million, technically closer to Penn State than to Illinois and Iowa! However, their contributions jumped from $62 million in 2022 from just $19 million in 2021 ... according to what I read on their board a while back, IU states this included a "one-time, generous gift of $30 million." Can IU depend on that every year? Without that, their revenues would be about $137 million, more comparable with Minnesota.
(I purposely did not compare any Big Ten schools to non-Big Ten schools so as to try to neutralize the conference payouts.)
And of course none of this considers "what a school brings financially" outside of their athletic revenues, but it is just illustrating the point that I think in general, you need to be careful looking at simplified lists like schools with the highest revenues or schools with the most TV viewers ... there are a lot of lurking variables here.
EDIT: This also got me thinking that I think one of the greatest things about the Big Ten is that there really isn't any school that is TOTAL dead weight. Even our school with the smallest fan base (Northwestern) is an elite academic institution that no doubt provides a lot of value to this conference. No offense to these schools, but we really don't have anyone like Oregon State or Mississippi State or Oklahoma State that aren't elite academically, do not command large fan bases, are not covered in major markets, etc. You could argue the closest is Purdue, I guess, sharing the state with Indiana and (from my experiences) having somewhat of an "alumni-only" fan base, which limits your viewer potential.