Read this article about Von Hippel's concept of lead users if you really want to understand how adoption in technology markets works, and why there is no chasm. He argues that discontinuities in consumer needs make consumers use technologies in ways that shape entire markets. Here's the seminal reference (PDF).
In 'accelerating past the chasm', I've tried to relate this back to the notion of preadopters and the mass-market - arguing that their needs are fundamentally the same, and it's the shift
in needs which firms need to address, not any 'chasm' between sets of consumer needs.
VenChar has a nice post discussing this topic, critiquing my piece and discussing a post from VentureBlog.
Note to Chari and Venky @ VenChar: I wanted to send you a link, but I can't find any contact info. Drop me a line and I'll send you the link.