God, I absolutely HATE this argument... You know why? Because it's NOT TRUE!
http://en.wikipedia.org/wiki/Buffalo_Bills_(AAFC)
So, Buffalo did, in fact, have a football team, named the Bills, no less, BEFORE Ralph Wilson.
Another one of those "facts" that some homers just love to ignore: Ralph only chose Buffalo after he was denied a team in Miami: http://en.wikipedia.org/wiki/Ralph_Wilson
Buffalo could very well have gotten a football team, considering the fact that they were still a pretty decent sized city back in the 1950s and 60's. Dallas, Minnesota, Atlanta, Miami, New Orleans, Cincinnati, Tampa Bay and Seattle all received expansion teams between 1960 and 1976... if there was no team in Buffalo, one of those teams could very well have been put there.
I won't go as far to say that there would DEFINITELY be a team in Buffalo if Wilson didn't put his team there, but to say that there 100% for sure WOULD NOT be a team in Buffalo is incorrect.
-Bill