EMC is buying Isilon for $2.25 billion. They want the video market, which seems to just be growing and growing. EMC stock dipped a little on the news, which is not surprising because Isilon isn’t worth what EMC is paying for it. What does this mean for the video market? More uncertainty. EMC has been an acquisition marathon runner since 2002, buying up Avamar, Documentum, Epoch, McData, Iomega, Archer, Greenplum, Bus-Tech, Kashya, Dantz, Mozy, Data Domain and even VMware (not to mention a bunch of other companies). So what does this mean for Isilon’s product line moving forward. If you look at how the acquisition of Dantz and Iomega sparked…