A lot of debate today about “community” vs “corporate”-driven distributions. I (think I) understand the basic difference between the two, but what confuses me is when I read, for example:

…distro X is a community-driven distribution based on Ubuntu…

Now, from what I understand, Ubuntu is corporate-driven (Canonical). So in which sense is distro X above “community-driven”, if it’s based on Ubuntu? And more concretely: what would happen to distribution X if Canonical suddeny made Ubuntu closed-source? (Edit: from the nice explanations below, this example with Ubuntu is not fully realistic – but I hope you get my point.)

Possibly my question doesn’t make full sense because I don’t understand the whole topic. Apologies in that case – I’m here to learn. Cheers!