[calinet6]

> relative to the resources invested

While Canonical has invested limited resources in Ubuntu, the overall amount of resources used to create the Linux kernel, the Debian toolchain, and the Ubuntu OS are far greater.

One could say they match or exceed the "resources invested" in OSX, which also uses a range of Open Source software and history (to name just one extremely important part: BSD Unix).

The two are actually broadly comparable in the work and effort put in, and apparently the results as well.

You could argue that Ubuntu has the greater achievement because they spent less money on it, but given the actual value put in, it seems like a moot point.