Prior to the BTN money, we didn't invest in football because we -- like most of the B1G other than UM, OSU, PSU and Nebraska -- didn't have the money! Of course, PU compounded this disadvantage by prioritizing the rebuilding of outdated non-revenue sport facilities over football, but ask yourself, why were those non-revenue sport facilities so bad? Because for years we didn't have the money to keep up since the primary source, prior to the BTN, was the football gate. Now, one can say Morgan should have keep up with football and ignored the non-revenue facilities, but I'm sure UM and OSU's non-revenue coaches would have complained about that too.
Still, the larger issue is how the parity that once existed in B1G football through the late 1960s was ended by OSU and UM's complete domination, beginning in the 70s. From 1959 to 1969, every school in the B1G went to the Rose Bowl at least once, with the exception of Northwestern. This parity keep all the football programs and thus the athletic department budgets relatively healthy. But by the late 60s, UM and OSU began an arms race in facilities and salaries that no one else in the B1G could compete with, at the time. From 1969 to 1981, only two schools represented the B1G in the Rose Bowl: UM and OSU. This seriously damaged the football programs of the other B1G schools, and thus their athletic department budgets, for decades to come. This is why Purdue's non-revenue sport facilities got so bad. And the "little 8" (as we used to refer to B1G sans UM and OSU) is still recovering from this, given we haven't had the BTN money so long that all could be repaired. The legacy of UM and OSU's domination, that began in the 70s, is the recruiting advantages they both still enjoy to this day as "elite" teams vis-a-vis their B1G bretheren. For all the success of Wisconsin and MSU, they still can't recruit with OSU and UM.
Regardless, my statement was made tongue-in-cheek, rather obviously, I thought.