I agree wholeheartedly. I've been following along with the fair.io/sentry launch, and I think this type of licensing is a step forward in creating sustainable code that advances technology.
I was at an open-source company during the big data boom, and even then, it was hard to find ways to convince businesses that the engineers building the open-source software running critical data jobs needed to be paid. The anchoring principle is huge, and the reality is that once something is free, companies value it at zero dollars.
Delayed open source with the source available and changeable now is the best compromise for all that works from what I have seen.
