How so? Commercial -support-, perhaps. Butt in not sure how offering to sell software that is free I'd any business model. And that's my point, Stallman absolutely DOES want to kill commercial software (as is this right)

I consider commercial support a business model for commercial software. Commercial software does not have to mean non-free proprietary software.

If Stallman wanted to kill commercial software he would have put wording into the GPL to prevent its use in commercial products. As it stands I can still use the GPL on a commercial product, of course it is a rather odd choice since the user is free to take the work and redistribute it, which is why going the commercial support route is much more typical.

but what do redhat,suse, joyent, docker sell?