Interestingly, many other companies are starting to take this path, and I think it sucks. Not that they're focusing on enterprise customers, but that they're essentially pulling a bait-and-switch: get traction and word-of-mouth with smaller self-service customers, and then once they get enough street cred, go tell those smaller customers who were crucial to their early success to fuck themselves.

Full Story has gone this route. They used to have a plan that would work for smaller companies, now they have nothing between their free tier (1000 sessions a month) and their lowest level paid tier which is "5 figures annually" (they won't even announce any pricing on their website, though not sure if they ever did).