When they do, I might switch.
Or when any other distribution switches, I might switch to them.
But they'll also have to make distribution upgrades as easy as with Debian.
I'd even pay for an annual subscription.
But right now, Debian handles the tasks I need to perform SO MUCH BETTER than ANY of the other distributions.
There's nothing about Debian (aside from the "Free" agenda) that every other distribution couldn't implement (maybe even implement it better).
But they haven't.
I've gone through SlackWare, Red Hat, Caldera, SuSE, Stormix and others I don't remember at the moment. Debian works best for what I do.
It isn't an issue of money. Or of not using anything "non-free". Or anything else.
Debian just works so much better for the stuff I want to do.