Well, before posting such a generalized article, Mark Dubovoy should have made some research exercises to find out that this extreme short supply, is mostly something special for the US market, and is less valid for many European countries. Generally, the m4/3 lenses are in good availability in the stores, and even the GH2 - though it has some shortages, isn't that difficult to find.
Proably the US currently is less profitable to the manufactures, partly due to the recession, partly also due to some business legislation and habits. (This buying, trying, and returning habit, is less prominent at least in Germany)