The Big East might still exist had programs not bailed. West Virginia, Miami, Virginia Tech were all marquee teams from the BE and would have kept that conference elite. And to blame WVU and Nebraska's fall to mediocrity on coaching staffs alone is inaccurate.
Nebraska would meet teams like OSU or Michigan or Wiscy or PSU in NYD Bowls. Now they play each other in the regular season and cannabalize each other long before the bowls begin. College football was better beforethe P5 nonsense started.
Woefully naive and self-defeating.
You're arguing the conferences they left would have been stronger had they stayed. True. You're also arguing it would have been easier for them to make NYD bowl games from those stronger conferences. Self-defeating.
Nebraska still would have played Texas, Oklahoma, Oklahoma St, Colorado, and Texas A&M.
WVU still would have played Miami, Pitt, Virginia Tech, and BC.
"The Big East might still exist had programs not bailed" No . But they did leave. Once Va Tech, Miami, and BC bailed the momentum wasn't going to be stopped. After Cuse and Pitt gone, they had no choice but to jump in any available life raft. The conference they left, was not the same one that BC, Miami and Va Tech left. You're argument is ridiculous and naive. Your argument is so simplistic it can be summed up as "well if nothing changed, then everything would be the same".
Things change.
More than anything else, coaching matters. Look at Florida before, during, and after Urban Meyer. Every school Nick Saban has coached at. Michigan. Ohio State. Louisville. USC. Texas. Tennessee. Georgia. etc etc. Coaching, and everything associated it with it from filling out a staff and recruiting, matters the most, especially when comparing P5 programs and their level of financial support from conference affiliation.