When an application becomes default in Ubuntu, does Canonical pay the developer(s) for making it default or do they just use the application for free?
All of the default applications in Ubuntu are free software, and in most cases, certainly in all cases that ship on the CD, that means they are not for sale.
If Canonical did pay, it would be a gift. They ship software under the same licenses the software itself ships with. So, in most cases
However, Canonical and other Linux distributors do sponsor by employing developers to work on software, of course. And, like TheX says, they contribute to the software itself. Which is the whole point.
