Murphy may have had a little to do with IU football since 1969 and Hep years until now. But, it may also have to do with Corso, the administration, the B1G, the B1G East, and demographics.
Corso, for example, was roomate of Burt Reynolds at LSU. That should explain some of the brain damage.
Demographics are hugely against IU and Purdue. Lower population in Indiana as say compared to Ohio. In Indiana we are competing with Notre Dame, Purdue and Northwestern, Illinois, Michigan and MSU...not to mention Ohio State that has a virtual B1G monopoly in a more populous state...Ohio.
The administration, the B1G and the B1G East tilted the playing field...and, in many ways, still do.
I remember living in Briscoe and then 4 years later after military service in McNutt and partying with some of the football team. When a bunch of us rented on 11th street the football team friends stopped by sometimes for a keg or three and a breather. Think IU won 4 home games in 3 years....but my memory of those games is sketchy...