Not much metaphorical about that quote though.
Ah, I think we have diverged somewhat from the topic of the OP's post, but then, the forum thrives on conversation.
Volunteering, as in this kind of working for lodgings, etc., is pretty commonplace and well established among sites where income is both very limited and very seasonal. Especially in remote areas with no large population or infrastructure available.
If it's not for you; don't do it. There's no money in it, but then there's no money available to pay enough to cover the costs of accomodation elsewhere (and transport to and from) anyway.
I hear what you're saying Mousey; I'm an archaeologist, and it was a compulsary part of my degree that I did so many months of hands on work before I could graduate. Multiply that across the thousands of archaeology students in the country in any given year and there's no way that an industry already struggling to get paid can afford to pay students. Food and board is not even routinely offered. Many folks who aren't students are so keen to 'experience archaeology' that they pay for the privilege of being on site and doing scut work. There are sites and companies who do offer lodgings and the like, and who genuinely go out of their way to make the 'volunteering' an educational experience for students, but most are looking for free labour in return for a quick write up and a signature for the University so that the student has the requisite months of work. If you want the degree, then you do the work.
Most look on it as experience, and it's experience that can't be gotten elsewhere. There's no way they'll pay even minimum wage on top of food and board though. I got lucky and found volunteering led to paid employment, and I wasn't alone in that, but it was still a real struggle for many others.
The 'market economy' and 'money renders' doesn't always work well, because unless a lot of people are prepared to pay well for a service to cover all costs, and that inevitably leads to competition, and that competition often makes for a very poor selection in the end of a few viable money makers, or 'volunteering' is an accepted part of the way people manage to make things run.
M