Anti-SCO verdict to increase usage of Linux?

Seems very likely. After the judgment of the Single Judge (which can be appealed), the case for more people moving to the Linux platform seems to be much more likely. For quite some time now, SCO has been threatening people with the promise of billions of dollars to be paid in royalty to SCO. When a corporation has to take a decision about purchasing an Operating System for use, it looks at the total cost. Now, Linux is free, has some support cost, and may seem more difficult for Windows-comfortable users to use, but the threat of royalty payments and the uncertainty was prohibitive. With that gone now, one can expect Linux sales to go up significantly:

The court victory likely means better business for Novell, which sells Linux software. Brent Williams, an analyst at the Benchmark brokerage, explained that many businesses interested in switching to Linux had been sitting on the sidelines while the SCO suit played out. They worried using Linux could obligate them to pay royalties to SCO or make them lawsuit targets. SCO has sued AutoZone and DaimlerChrysler for using Linux without paying them.
Companies like Novell and Red Hat make money by packaging and supporting Linux. IBM, which failed in its attempt to market a proprietary operating system of its own, has championed Linux as an alternative to Windows.

With this judgment, SCO gets a body blow, and investors reacted in the same way; the SCO stock was down 70%, and given that SCO is primarily a Linux patent earning company, it is expected that their current business model will be significantly affected. The biggest loser of course could be Microsoft, if more businesses move to a Linux based solution, the direct impact would be on the MS businesses of the Operating System and Office.