The above question is very valid - with open-sourcing your code you will have to get into the 'community management' game, especially if you think you'll be taking contributions in the form of code sometime soon.

If you customers are already asking for it to be open-sourced, or if you have partners in mind who will support this endeavor, this is a good start. If, on the other hand, you open-source without a good PR push to partners/customers/developers it's like a tree falling in the forest; will anyone be around to listen?

We open-sourced from the beginning and then found clients; it was a long haul. We eventually found a toehold in developing countries, and were able to build up client credibility from there. If you already have a plan for using the OSS to sell right away, then maybe this plan is for you.