The article points out that MS will still provide blocking tools for companies. Corporations are the major source of IE6 browsers and I'm not sure this will have any impact on them. The best we can hope for is that high consumer adoption rates will force many more sites to drop IE6 support which might spur companies to finally test and upgrade.
The is a common claim, but has anyone actually researched this? Is there any evidence that this is still true? It's my understanding that most of the IE6 market share is in Asia, where many people are running pirated versions of XP.
I know our competition works the same way, as does pretty much the whole government services sector. That's a few million employees in the U.S. alone.