Well, I myself would need an extention if my cellphone was my only phone, because in the basement, I get no signal. But, we have VOIP, so I'm covered. ;)

Mine neither, All it requires us to do to have access to its wireless network is login with our student ID and password. And even so, most people with laptops just take the ethernet cables from the computers and jack their laptops right in instead, since it's alot easier, and since the wifi at my college kinda sucks, especially in the tech sector. And on top of all that, our college network is usually infected with 1 or 2 viruses at once that AVG gets each and every time, but our IT people just can't seem to get rid of. Ahhhh, the joys of knowing your tuition fees are well spent in making sure that the employees are not competent whatsoever in their field of expertise.

If that were the current business model, Microsoft would be broke...

Okay, one, google's Chrome is a web browser, not an operating system. And two, how did you pull out chlorine from a car analogy?