Yes, every other college stadium in America sells beer just to be altruistic.
We've got a fanbase that is notoriously cheap compared to other stadiums / fanbases, potentially limiting sales boost.
We've got a fanbase that loves tailgating and drinking and exiting for halftime and drinking (presumably would not longer be allowed). Would this impact ticket sales... almost ironically?
We've already got alcohol sales for those who really want it in areas they pay a premium for. What is the cost of potentially losing that sales pitch?
What is the cost of adding equipment, servers, plus cost of licensing and risk and monitoring?
What is the cost of some negative fan experiences on ticket sales and donations? AKA "Slobs"
What is the cost of competing against CyTown bar tenants?
Anecdotally, after attending games for 30 years in many different stadium sections I don't see a huge demand from those I talk to. Most people I know drink enough before the game (guilty), bring in their own shooters or something (guilty) and or don't want to spend the entire game in lines and in the bathroom (guilty).
I could be wrong, I'm sure Jamie has the math. If this was a slam dunk $ raiser... I suspect it would be done by now.