As someone pointed out several months ago, if you get ten people together who want to buy a cat, the shop owner shouldn't sell them a turtle. There are numerous ways that OD&D departed from miniature wargaming, and yet this newest edition has more in common with wargaming than OD&D or any version we've had since. The official brand has gotten so far away from the original game that it's no longer recognizable as the same. 4E is not a continuation along an established line that has gone on for more than 30 years as much as it is a reinvention. I think the reason that 4E is having a hard time gaining acceptance, particularly among the core audience, is because the majority of the people wanted refinement, not reinvention. Had you given them that, there wouldn't be as much discontent right now.
There was really no need for such a huge departure from the previous editions, people still would have bought it because it's D&D. This brings me to the point that the true reason for making the game so different was to eliminate backwards compatability. If people can no longer use their old stuff, they're forced to buy new stuff, which is where we come back to selling the people what you have rather than giving them what they want. This strategy all falls down due to the fact that gamers are smarter than that and they have other options. Lots of them.