The world is changing. It has changed. No longer can you keep up with the Jonses doing what you have been doing. You have to change too.
Dell will be pushing PCs to farmers in China, a huge emerging market. Dell will have to earn its keep selling low-cost PCs to people not locked-in to that other OS. I guess that means GNU/Linux will become more popular in a land where it is already popular. The government of China is subsidizing these purchases to boost the economy internally. The cities have been enjoying the fruits of the technology/manufacturing boom in China. Now the rural parts will join in.
This is a market of hundreds of millions of people now able to buy their first PC. The world will be tripping over themselves to sell and price/performance will matter and monopoly will have no place. Dell will likely be selling PCs made in China from Chinese parts with Chinese labour. Will Dell recommend Vista? I doubt it.