B2B or so-called Enterprise Companies, especially industry-specific new companies, would have a hard time qualifying on several fronts (market size, growth rate, growth interval). I am particularly interested in the B2B style of startup because I run an Enterprise Startu-er... Enterprise New Company focused on serving the insurance industry. A B2B Startup, it would seem, would have to link customer charges to something that can grow without a new sales contract. I guess, the trick to achieving high growth rates is to create viral growth inside an existing account. Growth in the B2B space will be large jumps (with a new contract) followed by organic growth or not (within the bounds of the existing sales contract). It seems to follow then that since the purchase agreement is the painful and tough and slow part, a B2B Startup would want to have a Freemium or some other type of contract with low/no startup costs and higher per user/GB/account/server/unit costs.
Gives me some new direction on pricing.
On an unrelated note, I'll disagree with other comments of "favorite pg essays" and say that "Wealth" was the best by an order of magnitude. http://paulgraham.com/wealth.html