The Bills are worth on the order of $1bln. If you kick in $1k, you only have to find 999,999 friends to buy the team
The number of Bills fans who could part with $1k isn't anywhere near a million. So, there would need to be a lot of people who look at it as a purely financial investment, and they would expect to maximize their return. If you think Ralph is stingy, imagine what a board of directors would say to hiring a coach for $10 million a year.