The idea of setting up some kind of social enterprise is a very interesting one. One other service it could sell, somewhat more controversially, is advice on dealing with problems with Wikipedia articles. I think it is clear that just letting OTRS handle it doesn't really work and people need more support than just an email address they can send things to and get back a lecture on Wikipedia policy and procedure, and judging by the number of attempts we see at setting up for-profit consultancy services for this, it would appear there is a market. (I think there is probably a market of companies and individuals that would be happier paying even if they could get the same thing done for free, just because they feel more confident in a paid service.)
It would be better for a social enterprise of Wikimedians to be providing that paid consultancy than some of the other people trying to offer such services. I did try and draw up a rough business plan for such a consultancy, and I think it could turn a profit. The big unknowns were how much we could charge (I used some PR consultancy chargeout rates I found online as a rough estimate) and how much non-chargable work would be required in order to attract business (if we get people just knocking on the door without any reals sales work required, then it would easily be profitable).