1. The blocking of inside zone is exactly the same as inside zone read. The only difference is that you run the read out of the shotgun and let your qb read the DE. Under center, you still leave the DE but you use the bootleg fake by the QB to hold the DE.
2. You still don't know what you're talking about because the play you are describing is speed option. You don't "pitch" on a typical zone read play. You either keep or give.
Alabama did use the same blocking scheme as Florida. Florida ran more outside zone and Alabama uses more inside zone, but both are zone running teams. Sure they are not completely alike, but that's because one team runs pro style zone (like Denver) and the other runs the spread zone read version. Still the exact same blocking scheme though.
3. Yes, a defense does get better at defending an offense the more they see it, but if the offense is based on sound principles and has proper constraint plays built in to prevent a defense from overplaying, then it doesn't matter how often a defense has seen it.
4. They don't run the option in the NFL because of how expensive Qbs are. You don't sign a 100 million dollar contract with a guy, and then run the option with him. The option never died. Look at Air Force and Georgia Tech. It is not as widely used as it was, but that comes back to the NFL and QB contracts, along with improved rules to help the vertical passing game.