Two small things: I might have mis-understood you, but you can't sell Apache licenses for those who need them without those people subsequently having the right to give away your code under that (open) license to anyone they like. Which means, if worst comes to worst, you'd sell exactly one license. Also, there is talk about LicenseZero becoming more flexible in the near future as to which private licenses are offered to buyers (e.g. company-wide licenses), so I'd watch that space.