I'm sure folks will complain if we get too much more deeply into the Lucas-problem (and he's out of it now so it's ancient history past describing how differently Disney is handling them), but I just want to clarify what I said.
The prequels didn't capture a generation like the first trilogy did. That doesn't mean that kids didn't grow up liking them, even becoming passionate about them, or that no one liked them (there are parts that are good IMO, it's just that overall it's a story I don't care about). But that they simply weren't as universally seen as an aspect of growing up in that generation as the OT.
When people look back at the 1980's, you really can't not mention Star Wars. For the 00's, that was more Harry Potter than anything else. Culturally, the prequels are much further down the list when you talk about that decade, and are mostly notable for the incredible publicity/corporate partnerships/merchandising push not the reaction to the films themselves by the greater public.
Disney knows that. They aren't going back to the OT-style because they think it's the most artistically valid - they are going after it because it was what resonated throughout the world and changed the film industry.