Yes it will affect companies like Macromedia and Sun but this also affects microsoft too and many other companies. I won't argue with the fact that microsoft may want to enter those markets but to say they want plug-ins not to be allowed is ridiculous. Especially since like every new piece of web based microsoft software seems to work off of Active-X plugins. Your logic that because microsoft wants to dominate every area of the software market and this will could help them so they must be happy about it is seriously flawed. I guess it's not much of a concern though, as someone(probably microsoft themself) will right an after market hack for IE that will suppress the pop ups to use a plugin.