The vast majority of people who write Wikipedia articles are unpaid. We are all volunteers, writing with our own time. In fact, paid editing must be disclosed:

The vast majority of people who write Wikipedia articles are unpaid. We are all volunteers, writing with our own time. In fact, paid editing must be disclosed: https://en.wikipedia.org/wiki/Wikipedia:Paid-contribution_disclosure https://en.wikipedia.org/wiki/Wikipedia:Paid-contribution_di....