I feel it really depends on the type of project. In my case the code is rather niche and would only really be licensed by a small number of companies doing embedded robotics or AR. However, this type of stuff is also fun for hobbyists, so I wanted to make it available. I don't foresee a huge developer community springing up around this, and since I'm the only person who will realistically be making major contributions and I'm working on it more or less full time, I need a way to fund it.

The real problem for me isn't major contributions, if these started coming in I may reevaluate my position. The problem is minor bug fixes where the complexities of acquiring another copyright holder outweigh the benefits of accepting the contribution.

As above, I don't have a good solution.