Planet Earth?
Or as George Carlin put it, a rotating buffet with weather. :-)
I don't think anybody really understands why companies go out of business, and thus they don't learn anything and keep making the same mistakes. Do you seriously think Netscape owned 60% of the market, then died suddenly, just because of Internet Explorer?
Also, do you have any idea how many companies and people have been made filthy rich by partnering with Microsoft? The world isn't any more black-and-white as it is only green.