The BCS is run by the schools who benefit most from it. They want to give off the impression of fairness, but only as it affects the biggest schools...they're not about to take money from their pockets and give it to the non-BCS conferences.
BCS team fans would simply reply that they make the money so they should get it.
This is obviously true, but I always think there will be more total revenue for the sport if they spread the wealth and allow the entirety of Division 1A to compete. The way the system is run now the BCS schools get a HUGE portion of the wealth and I think keeping it that way weakens the sport.
I use myself as the barometer of this. College football used to be my favorite sport but I've grown completely apathetic about it over the past 10 years. This will be the first year I won't have season tickets to BG in a long time. I just don't care anymore. The dispersion of money has crippled the MAC to the point I find it virtually unwatchable...and nearly impossible to really be enthusiastic about my alma mater. I'm sure the NCAA just assumes that fans such as myself will become OSU fans and the money will still keep pouring in, but I know in my case that's just not true. Sure I'll watch more games on TV than I have in years past, maybe, but without a relevant MAC, I really am not that enthusiastic about college football anymore.
I can only speak for myself, but the monopoly the BCS has created has taken me from being a die hard college football fan down to a casual fan. Honestly the only real enjoyment I get out of college football anymore is watching the star players and projecting how they'll do in the NFL.
I can't imagine I'm the only fan to feel this way, but maybe I am. But nobody will ever convince me that allowing the top tier BCS schools to dominate the cash and media attention is what's best for the sport as a whole. It's what's best for THOSE schools, of course, but it's not what's best for the sport, IMO.