Your biggest mistake is equating recent wins/losses as somehow mattering in these discussions. OU and UT have massive generational fanbases, stadiums, and tradition. The remaining Big XII plays in stadiums about 50-60% of the size, with maybe one (BYU?) post WW2 national title between them. What the Big XII lacks without UT and OU cannot be made up in the time it will take to renegotiate the next TV deal and more than likely will never make it up.
We make more money than the ACC because they locked themselves in for way too long. Long term deals do not take into consideration inflation or a rising sellers market. We make more money than the PAC because they have a failed TV network that needs inventory. We also dared to cross ESPN and boxed them and Fox against each other while the ACC kissed the ring and had them run their network. If the ACC were to get a chance to renegotiate they would surpass Big XII TV revenues guaranteed.