To IE7 Dev team, Why will you not maintain even M$ GUI standards

Slashdot sometimes back reported that some chief guru of windows called IE7 as cancer, well the reason was because IE7 don't follow standards and even failing the basic test www body for browser compatibility, I was waiting from long time to rub my hand over it, Yesterday nite I atlast I got that anyhow, thanks to Ravneet. And it really surprised me to see that now Microsoft will not even follow there own standards, from years it is being practise that to close a document in MDI we need to use hotkey ctrl+4 to close the window, but IE7 will get close by ctrl+W, and not by standard key, yes technically IE7 is not MDI but to naive user it is MDI application and will remain so, and every1 on this planet is going to waste few seconds in learning this hot key, and not only this, now Alt+F --> C will not close browser too but Alt+F --> X, so lot of current automated web tests will also fail and organization will put lot of efforts solving this issues, Sometimes I feel this all might be intentional by company, reasons can be a dozen which really might make sense though only to them.