Even before MACtion Akron football was an afterthought. It would be even worse today as live attendance at sporting events is down a crossed the board at all levels compared to the 80s or 90s.
I can't speak for everyone, but my undergrad was during the Ianello years. Having a new stadium should have been an exciting time for the program. Instead it was a pathetic excuse for football. People can forgive you for losing by 3 touchdowns to a ranked P4 program. Consistently losing by 20, 30, 40 points to teams in your own conference week after week destroys fan enthusiasm. Often times the games were decided before half-time. More so than just losing, nobody wants to watch bad football. At least when the Browns lose it's often times still a game entering the 4th QTR.
The same friends who I used to go to games with as an undergrad quit going and now even if I tried giving them free tickets, they'd rather just stay home and do yardwork or whatever else.
The Northwestern win was the most excited I have been as a Zips football fan (wasn't a Zips fan until 2007). The issue is they failed to build off of it. I think they finished 4-8 that season. Followed by Arth's 3-24 tenure. Why would Joe Akron care if after a big win they just go back to being the same old Akron?
The last game I went to was in 2016 when App State came to town. If you're wanting 15k-20k people at games I'm the low hanging fruit you should be looking to attract. I obviously have an interest in Akron sports since I post here and since that time I have even attended dozens of other Akron sporting events. Heck, I've even went to several alumni homecoming tailgates, but skipped the game. Deciding on either going to Eurogyro to hang out with friends or just going home instead. I'm telling you the reason I don't attend is because watching bad football, which Akron has played for the better part of the decades I've been a fan, isn't worth spending 4 hours of my Saturday, Tuesday, or Wednesday. You're a former football player if I recall correctly and it seems if you were local you would probably already have season tickets. You're not the Joe Akron that needs to be convinced to attend. Simply playing games on Saturdays isn't going to make 10k more fans show up in the frigid cold. Much more needs to be changed.