Actually, I only meant to grant you your first point. It's not likely to be advertised anytime soon. I'm counting on a cost advantage to win the day. Maybe businesses will adopt linux faster than consumers.
I also agree that the selection is currently limited, but Dell's highest spec'ed laptops come with Redhat on request - no special webpage to find, it's simply listed in the OSes that it can come with. So it's true that there's a limited selection and they're not in retail stores, but you can get fast machines. Also, the selection is improving at a rate faster than linux adoption. I think it's a question of achieving critical mass.
Your second point is the one I was mostly speaking to. Manufacturers only need one linux platform with one of their chips to make that driver available to anyone using that same chip. Once you've supported Linux the first time, you then have an existing code branch and programmers with linux expertise to support the next generation. Even the manufacturers who didn't win the platform had to write the drivers to bid on it. The latest pre-installed linux computers are a bigger deal than you realize. Linux users should soon see a higher rate of supported hardware than ever before. (and it wasn't bad before)
I don't need the Year of the Linux Desktop to be happy. I want more drivers and more applications that support linux. Currently I need more linux users for that to happen. So, I'll settle for the Year of More Linux Users. I think that's a safe bet.