DY:
“There’s no reason that it can’t be both.”
I am not saying that it can’t be both, I was just acknowledging that OC considers it a business and was not doing it for the virtue of the mitzvah.
IMHO though, I think that doing a mitzvah for the money is, as people say, “not in the spirit” of the mitzvah (not that you won’t get a mitzvah).