No, but it’s damn expensive. And the don’t do it every week.
If you get enough teams out West, would make sense to split into divisions to let them play each other on a regular basis. Split into 3 divisions and Top 2 Ranked Division Winners play each other. Assuming FSU, Clemson, UNC and Miami depart.
West - Stanford, Cal, SMU, AZ, ASU, Colorado or Utah (6 teams). could add both to make 7 teams
North - BC, Syracuse, Pitt, Louisville, VA, VT (6 teams). could add WV to make 7 teams.
South - GT, NC St, WF, Duke, VA, VT (6 teams). Could add UCF to make 7 teams.
If you had 7 teams in each division, 6 games would be in division and 2 would float. Or maybe go to 9 conference games and have 3 float. A couple of issues/questions. Would be back to playing many schools very infrequently. Even with 3 floating, takes 5 years to hit every school. With 2 floating, takes 7 years. Second is what does this alignment become worth in TV dollars. If you had 21 teams total, basketball would play each team once.
If you merged ACC and Big 12, would have ~30 schools. Could divide into 2 conference with 2 divisions each. Again only makes sense if you can keep TV dollars equal or better than today. I don't see that happening with ESPN and CW and whatever mix you throw in covering Big 12.
Bottom line is I think by the end of this decade, there will be dramatic changes to the landscape. What speeds this up is Big Ten and SEC bolting to form their own league seperate from the NCAA. I think they would help pay money to pick off a few big name schools from the ACC and maybe Big 12 and likely Notre Dame.