And when they raise the price to 20x or start doing something shady you can just move everything to a cheaper and more ethical competitor. Except that you can't.

There are many, many other advantages to open source than price.

If they can do for email & telephony what they did for the web, they wont need to maintain it themselves.

I remember being shocked after reading in the MS lawsuit that IE cost 100 million dollars to develop in like the 90s. What!?

I wonder how much Google has spent on Chrome..