True. Though I think the dynamic range of current digital cameras is pretty much fine. All they need to do is make the shadows far less noisy and make the highlights end much less abruptly. DSLRs already have a much greater latitude than slide film, and they're comparable to a negative with standard development.
Some guy on FredMiranda did a huge study in which people put their cameras on manual, and shot a series of pictures of a wall, adjusting exposure by 1/3 of a stop, and the dynamic range was determined to be the number of stops between the lowest and highest exposure setting where there was recognizable detail.
The average was something like 7 2/3 stops, and some people (mainly with full frame cameras) reported over 9 stops. I'm sure some of this DR is not necessarily useful DR, like the bottom 1 stop and the top ~ 1/2 stop. But still, that's a pretty good DR. Part of the problem is that there is no shoulder, though, so highlights end up being all weighted equally until they cut out. So the DR is qualitatively different than on film.
I haven't studied this formally, but I'd give Velvia maybe 4 useful stops in my experience, and Astia maybe 6 or 7. I definitely have to be more careful these days shooting slide film than I ever did when I predominantly shot digital. Then again I could shoot 800 pictures to make sure I hit the exposure on one of them, and I'm not doing that with 8x10 slide film.
I think "Photo Techniques" did a similar study (was it "Digital Photo Pro"?) that showed varying dyanamic range between a # of cameras. The best cameras did very well. What was interesting to me was that the camers with the widest DR were not known as the best cameras -- because, apparently, they also had a lot of variance (noise) in the extremes of their ranges. Cameras with low variance AND wide DR were, as you might expect, top-dollar items.
(At this point the little clown on a tricycle comes through reminding us all that film frames do not display these artifacts, and behave with great consistency across all acceptable ranges -- that is, they are still a match for the best commercial/consumer digi sensors)