* The 'pay someone to do X, which has Y value for us in return' is a very simple value proposition for even the most luddite of finance/legal folks to grok. The details are different, but you're essentially hiring a contractor.

* On the other hand, it's much less clear to those people what the value proposition is for paying for 'past work' or some amphorphus future work that it's difficult to quantify will have any value to the organization.

* That's why the above is much better framed as 'sponsorship' and put under PR/dev relations/talent/HR. They're the ones who can best track value from concepts like community engagement and enhancement, improved standing of the company etc