This notion of making a living doing your VLOG is fascinating, and I believe - doable. But in order to do it, and still be the creative person you want to be - I suspect that you really have to think about different ways of present - or positioning your material. If you use the Public Radio or Public TV model, you just ask folks to "pledge" so that you can continue offering them information that they want. The difficulty with this approach for the average vlogger is that most vloggers have one or maybe 2 things that they are interested in producing - where PTV or PR has many many different offerings that people are pledging to support.
Another way that I think about what I'm doing is to see this as a showcase that I can use to gather support for more long-form projects. A third way that folks are trying - such as Jay and Ryanne is to become a channel for someone who is aggregating content. Drew has been doing his own version of this by being the aggregator himself. I don't think there is any real answer yet - it's just too new. The music people can do it because they sell songs individually - and frankly people like to listen to them multiple times. Just some thoughts. This is an excellent conversation. Milt