Seems reasonable. Win7 was replacing something that was truly horrible and worthless, so people were rushing to adopt it.
XP gained less than 10% of the market in its first year as well, mostly because people just didn't see a compelling need to jump ship from 98SE (consumer) and 2000 (business.) And yet it went on to become one of the most dominant, long-lasting OSes in the history of the x86 platform.
And that 12 year old is sic.... he is now like 20 or something like that, here he is at a Vic Firth showcase. I met him and got his autograph a few years ago. He is super successful, super talented, but really humble overall.
That's pretty cool. Reminds me of Crush the Turtle at the Animator's Palate restaurant aboard the Disney Dream:
The walls of the restaurant are lined with huge LED monitors, giving the impression that you are under water looking out through portholes. The restaurant is also lined with cameras, such that a duo of operators back in a control room in the bowels of the ship can see everyone inside.
Over the course of the dinner, a realtime model of Crush, whose position is controlled by one operator and whose head/face are controlled by and lip-synced to a voice-actor, swims around from one table to the next, interacting with all of the people seated there. (Making fun of what the adults are wearing, talking to the kids, etc.) There's also a bunch of randomly-generated background fish to fill in the empty space, and a couple of fish who can be manually controlled to interact with Crush as well.