the guys from servicestack went through this process (i am in no way affiliated wit them), they got some backlash from a move to licensed model iirc, but also,

the guys from servicestack went through this process (i am in no way affiliated wit them), they got some backlash from a move to licensed model iirc, but also, it allowed them to be sustainable and grow into a company that allowd them to continue supporting the products. perhaps something the same? a cheap/free model for open source projects / schools etc , free for single devs or small shops, and paid for $Corps... yeah, you'll lose a few users from companies who only want something for free, but then, what have you lost, really? If people dont value their own time, thats their choice to make the $ vs Benefit calculation. good luck