Of course, it's maybe a bit unfair to compare 3E with its hundreds of books to 4E with just the three of them right now.
I honestly don't know anymore whether it was the same with just the three 3E Core rulebooks, but it surely was a lot less "away from the table" gaming than during the later years.
In 4E I also see that you could spend quite some time just looking through the available options (instead of playing), though building characters is obviously a lot more streamlined and focused now, mainly because it is more limited, more predetermined.
To draw in new players, this is certainly a step into the right direction.
Whether it will hold up in future, only time can tell.
I think they will have to make lots of books with new options to keep things interesting. Just like the MMOs, which have to constantly evolve and expand to keep the players interested.
The 3E Core (on their own) books definitely had a longer longevity just by themselves than what I believe the 4E Core books (alone) will be able to provide.
limited options = limited fun in the long run
Bye
Thanee