It doesn't make much sense to target Darling as a development platform - like "winelib" - which is why I stick to GPL. I don't want any company to ever use Darling for "porting" their app to Linux, because I consider this an abomination when done with Wine. I think it's fair to say "our app also runs under Wine/Darling", but it's unfair to produce a binary with bundled Wine and say it's a Linux version.

I also want to avoid the inception of businesses providing enhanced Darling for money without releasing the full source code (think Cedega), because in my view, that's akin to a fraud committed on other developers who invested considerable time and didn't ask a dime for it.