Why is Outlook Web Access 7 years old?

Why are we still using Outlook Web Access, an internet email client that is seven years old and terrible design even for seven years ago. It pains me that my office uses a program that was bad even by the standards of 2003 when it came out. But the real question here is… why the hell hasn’t microsoft updated this piece of crap at all? Seriously? The company has billions of dollars, couldn’t they spare a quick million to rewrite the damn thing? Hell, for a mere $2 million, right now, I’ll quit my job and go write it for them. It should take about eight weeks to produce something better. Eight weeks… tops. And i’ll even write it to support IE.