Microsoft interoperability announcement is a significant switch and a remarkable milestone onto the way to make the world of software an open, standardized and perhaps free as well. Especially regarding the IE8 default behavior.
Read more at:
I have said in the past that IE would eventually become an open source browser and so it would. I believe that by the year of 2013 .NET, IE and perhaps more products from Microsoft would be become open source projects.
There is no other way to keep your top rank in any business than being the best, by all means. Ever since the world of software have realized the the best way to write a software if the open-source way, Microsoft would have to join this principles in order to survive. The fact that more and more developers are switching to free and open-source tools, languages and platforms and barely the vice versa is the only fact that counts in the long run.