You're on to something here. There is a saying in sailing that goes like this...."The faster you go, the faster you go." When a sail is lifted and fills with air, the boat begins to move. It's a whole physics thing, but the movement of the boat causes other accelerating pressures on the sail that causes the boat to go faster. You go faster because you are going faster. This is not infinite.
The teams you mention win because they win. The more they win, the more they win. The more they win at this point, the more they solidify their positions at the tops of their conferences and the college football world because they get the best players. What does this have to do with recruiting? Imagine being a 5 star defensive line recruit and the coach from Indiana comes to your home and tells you, you will immediately be the best defensive lineman on the team the coming fall. Sounds pretty good doesn't it? How could this story get better for the kid? The OSU/Clemson/Alabama coach comes to your home and tells you that you will have significant playing time in the fall. In addition, there will be another 5 star defensive lineman next to you on the defensive line and a 5 star linebacker right behind you. Unlike Indiana, where you will get double teamed every play, you will never get double teamed at OSU/C/Al and you will make a ton of tackles, win conference championships, compete for national championships and produce a ton of plays that will be on video and shipped off to NFL teams before the draft making you a high round draft pick after your JR year.
That's how they win.
Not the sailing, but the rest of the ideas above I heard listening to Rick Neuheisel on ESPNU Radio. He is worth listening to during college football season because he is just so freaking smart. He is a kind of "lens of clarity" about all things college football that makes you more informed but less enamored by the sport because he lays things out as they really are and not, as fans, the way we want them to be.