In addition, I'm not aware of any way to be compensated, even by citation, for putting time and care into Wikipedia. As academics, we give a lot away for free (want to know some of our most-clever trade secrets? Just read our papers, where we detail everything we do so you can replicate it), but our compensation ultimately comes from what we can show others as our contribution to society. To anyone considering me for a job, promotion, or tenure, a well-written introductory article on precision tests of gravitation isn't worth a hundredth of one precision test of gravity published in Physical Review Letters.
For a single contributor, Wikipedia is ephemeral, but the academic literature is effectively permanent.