I agree with this. Conferences will not grow simply to mimic some other conference. While The SEC added the most attractive pair of programs on the market, they did not increase their media footprint very much (modest numbers in Oklahoma). And this actually did not diminish the bargaining power that the B1G possesses. They still have the same footprint that has kept them at No. 1 in media money.
The SEC is betting that the big programs with a national brand will create must-watch matchups when streaming becomes the prevailing format. The B1G still believes that the cable carriage method has a long tail to play out. That idea is spawned by their half-ownership in the BTN. The SEC has no equity in their cable network and they look forward to streaming.
The B1G wanted to win the contest for TX-OK but they fell short. They will not rush to add relatively weak media properties like Iowa State or Kansas. Virginia and UNC are the pair they would love to add if there could be any way to crack the GoR. But The SEC also wants those two schools and, as the media rights holder, ESPN could cooperate in moving ACC assets to The SEC. (Not overtly, of course, that would be unlawful.) I think the B1G is hoping for a breakthrough solution to the ACC GoR. If that could happen, they might be willing to include Duke and Georgia Tech. And maybe they would hold their nose and add Florida State (not AAU) because of the bounty of carriage fees. Florida State is rapidly increasing their academic profile so maybe that will satisfy the B1G. Adding those four States to the current B1G advertising footprint would send the media value of the B1G soaring.
The move that I think is more likely than most observers is the addition of a Western division of the BiG made up of PAC 12 AAU schools. The B1G currently has two seven-team divisions and adding seven (you pick 'em) Pac schools would be seemingly uncomplicated. The dispersion of the PAC 12 could occur with the impending expiry of their media contract and GoR. If we don't see them moving to extend those contracts prior to the expiry date, take that as a signal that the conference is toast. The PAC Network is wholly owned by the conference. Those assets presumably would be liquidated and distributed to the members. Or if a school or bloc of schools wishes to continue operating the network (unlikely) they could make a bid. In an any case the departing schools would have network assets or cash with which to buy into the BTN. (often referrred to as the B1G "entrance fee").
Travel among distant schools is less of a problem than many think. I envision athletes enrolling in remote "Zoom" classes that they can attend while on road trips that may last for multiple days. No reason the everpresent tutors couldn't travel as well.