Linux a threat to MSFT on the desktop?

The Economist argues that Linux on desktop PCs is coming but is not a major threat to MSFT. However, MSFT has to worry about Linux on other platforms. Excerpt:

So Microsoft may not need to worry about Linux on PCs all that much. Insofar as it can point to competition from Linux, as it has been doing with Apple, as “proof� that it is not a monopoly, Linux may even help Microsoft in its legal battles.

But the future is uncertain, and Linux still might yet represent another kind of threat to the company. No standard operating system has yet emerged for mobile handsets, robots, watches, televisions, printers, car gadgets and other such devices. Microsoft, naturally, wants to extend Windows' dominance to these as well. It is here, rather than the desktop, that Linux could be a real threat to the mighty company's ambitions.