> This is software support, it is a job, it should be paid.

It is paid, even if not in money. It seems like maybe you lack awareness of the other forms of capital and reward that exist, because your framing implicitly insists that financial capital is the only form of capital and that monetary reward is the only form of reward. But there are also a bunch of other forms of capital, like social, cultural, symbolic, etc. which you have missed, and there are non-capital (non-convertible) forms of reward, like feeling good about something. It's the entire reason why permissive licenses still preserve attribution.

To wit, people maintain things literally all the time either purely for prestige, or because being a contributing member of a community, even a small one, makes them feel good, or because knowing that maintaining things leads others to also maintain things. There are both intrinsic and extrinsic non-monetary gains here.

Stallman makes the same critical error in his foundational writings, so at least you're not alone in this.

(A foundational read on the subject of the different forms of capital is Pierre Bourdieu's The Forms of Capital: https://www.scribd.com/document/859144970/P-Bourdieu-the-For...)

(See also: https://en.wikipedia.org/wiki/Motivation#Intrinsic_and_extri...)