The way I see it, OERU will have three main stakeholders; (i) qualification granting organisations (anchor partners), (ii) private tutors/small training institutions, and (iii) learners. In this scenario the private tutors / small training institutes would be the "guides on the side" to the learners and will provide tutoring support and pedagogic learning material. These learning material could very well be OER but re-used and tailored to guide learners on their path to a specific credible qualification (e.g. BTech in IT). As a techi who likes to use FOSS in most of my projects, I'm always asked "why are you charging money when the technology is free?". My answer to that is "the technology might be free but the expertise in using it is not". In my opinion, this is applicable to the OER / OERu scenario as well. Small training institutes and tutors are not in the business of selling material but selling expertise in using that material. i.e. the material can be made available for free as OER while the students pay a small sum for the additional tutor support. This then becomes a viable business model which will attract more and more experts into the game.
Although philanthropy would be a great base for the OER movement, it has to have some sort of a business model to sustain itself. Otherwise the movement will always leech on public funds to sustain itself. The ideal would be to make the OER movement the "day job" of all of us who are "moonlighting" as advocates.
Just my two cents worth...