Because no one really cares, it really doesn't matter, and it won't get changed anyway (too many things depend on it). There are so many problems in the world that can be addressed and are worth addressing... this is not one of them.
This is a solved problem... We tried this with AOL keywords, and registrars hijacking DNS for search and both of those turned out to be a bad idea. Browsers these days will bring you to the .com domain by default anyway when you have a search provider selected. PS. Anyone else notice the Snake game on the site?
