I'm not sure many of those SEC fans were happy with 9-3 seasons previously, but yes, there is are going to be some really good teams end up with 3-4 losses because the really good teams are playing each other a lot more often. Heck, I think Florida is probably a pretty good team, and they could easily go 5-7 this year. Unless you are a REALLY good team, you're not going go through that UF schedule and win 9 games. Granted, they aren't all that tough but if anyone gets through an SEC schedule with two or less losses, that's damn good.
Tech is a bit of an anomaly with what they are spending. Georgia is and will be fine. Penn State I think had a situation where they thought they had a great QB and he's not (not unlike Texas). They will bounce back quickly because they have the $$.
I don't know where all this is going, but I agree that the truly great teams will be fewer and far between because of the turnover and continuity, but that doesn't mean it's going to be easier for the TCU's of the world to keep up. It's not just SEC teams and blue bloods that suffer from lack of continuity and big roster turnover.