ND and BYU are problematic situations for some different reasons.
If the BE expands to 12 fb and/or splits; and the B12 also adds two eventually, all BCS conferences would be at 12. The willingness of the B10 to go beyond 12 may not be open-ended indefinitely. ND's overall lure, may diminish a little bit each year, particularly if fb struggles continue. That focuses on their independent TV contract with NBC. If another network picks it up, it may not be as desirable as ND would hope. The point is ND's options may narrow, and they could have passed-up opportunities that were in their best interest for the long-term. As long as the BE gives ND fully what they want, ND is not budging.
BYU is hoping for a B12 invitation. Their move to independence was reactionary to the PAC10 inviting Utah. While the MWC TV contract was sub-standard in their view, BYU's attraction to sustain itself as an independent may have challenges. Their appeal is largely regional, and they could encounter scheduling complications down the road. They did not make profile gains in how they placed their non-fb sports in the BWC. Plus, the BCS has not offered BYU a special avenue to BCS bowls as available to ND.
BYU went to the WCC, not the BWC. The WCC TV package is up next year and they just doubled their marquee games. It's quite plausible that the WCC TV deal matches what BYU got in the MWC thanks to the power of Gonzaga and the unique time slots that the WCC fills for ESPN.
Which means BYU is already coming out ahead thanks to their FB TV deal with ESPN. Anything they get from the BYU Network is just a bonus.
With regard to scheduling, the WAC sitting at six teams basically gives them ample open dates, and ESPN is going to help them because its in their best interest to put good BYU match-ups on TV.
Notre Dame is in a situation where their lack of success, combined with the other conferences new TV deals, has lowered the gap between their revenue and everyone elses. Back in the day, they had the most TV time and largest TV revenue. Now the Big Ten and SEC pummel that, as does Texas.
Notre Dame is in a situation where they may need to give up independence to keep up with the BCS schools.
BYU is in a situation where they had little revenue, and independence helps them pull away from the non-BCS schools.