Because some important vendors don't target Debian whereas they do target Ubuntu.
Canonical and RedHat are paying the salaries of the people steering the direction of Linux as a whole. They're forcing you to choose between the two.
Canonical and RedHat are paying the salaries of the people steering the direction of Linux as a whole. They're forcing you to choose between the two.
That's pretty weak sauce even compared to the five years Debian and Ubuntu offer. And Debian actually supports all their packages, unlike Ubuntu which tricks people into installing unpatched garbage from 'universe'