Well, yeah. But what if the previous coach looked at me, graduating from high school (for reference I was 5' 10" and weighed 135 lbs) and said, "That frame has potential! He gets one of our OL scholarships!).
It turns out despite being outrageously light, I'm also gravity bound and slow. No amount of footwork, film study, weight training, or motivation is going to keep me from getting blasted into the backfield the moment the football twitches.
Obviously, that's reduction to the absurd, but it emphasizes that some guys are just misses. It's tough to project powerful, fluid, flexible collegians from large high schoolers. Texas has an OL who's 6' 10". Guess what? He plays high. Getting underneath him just topples him over. He isn't fast enough to get out of that huge stance and into pass protection. He wasn't that big when we started, but now, no matter how much film he studies, he's gonna get blown by.
I believe that, right now, Texas does have sufficient raw material. Not in abundance, not dominant, but sufficient. They have to heal, improve both strength and recognition, and get enough reps together without replacing injured/failed members to be cohesive.