That's not the problem, 'tho. Wikipedia is volunteer-written and needs money to pay for the SW development and the servers.
The issue is that they are not upfront about their strategy and that they are resisting unionization by the workers who develop the software.
A leading wikimedia software developer (@brooke@bikeshed.vibber.net) lost her job a while ago, most likely due to her involvement in the unionisation effort.
There are multiple studies showing that paying volunteers can backfire in many ways. It could turn an hobby into a chore, attract the wrong kind of contributors, or sour those that do not have enough time to qualify for money. Plus, any metric you were to use to assign rewards would quickly be gamed by the wrong kind of people.
We can discuss about how much the administrators are paid and the many issues wikimedia has, but please, for the love of god, let's not pay editors.