It is all about money. I am a subcontractor for the company (CSC) that provides the event staff personnel at the Ralph. Now, I am working at FedEx Field, but I have spoken with the regional vice president, who also oversees the Buffalo office.
He told me each season CSC tells the Bills more staff is needed, but each year the request to up the budget is denied. But that only covers the guys and gals doing the pat downs. The Ralph has its own security personnel, and they are the ones responsible for controlling the crowd before fans go through the screen stations. I know it is again budget issues, the team unwilling to pay for the additional personnel needed to set up and maintain organized lines leading to the gates.
Tragically, it will probably take a few fans getting seriously injured or even killed in thee stampedes before the team will do what's necessary to ensure safety.
Of course, let's not forget these stampedes wouldn't happen if there weren't so many a-holes ready to push and shove others whenever they can get away with it. But, alas, the reality is the world is full of these jerks, so the franchise needs to remedy this situation immediately.