Its an interesting theory because I have had the same problem with AT&T in other stadiums while the person next to me has a good signal. Before mobile share (or even unlimited mobile to mobile), I would not have switched from AT&T because of so many extended family on AT&T. But now with Mobile share, I would consider it. But I am under contract for over a year to go, so I will probably just stay with AT&T.

Btw: I am all for wifi in stadiums as well. And yes real fan dan, I will still be able to cheer ;)