As GeorgiaBlue said, we have been 6 man for years (with rare exceptions). With the way teams are faster, spreading the field and passing more, I don't see how 5 man can adequately cover the field anymore. And on kicking plays, 5 man is at a HUGE disadvantage. Schools weren't given a choice whether they wanted to pay for it or not, it was dictated, as was the price. That's what it costs to have a game, deal with it, or play all road games.
Same with basketball, 2 man mechanics can't keep up with a Varsity game. There is a huge advantage with 3, which we also went to years ago. The only sport where we haven't kept up with progress is baseball, where almost all games until playoff time are still 2 man.