That's not true. The LGPL explicitly allows closed-source programs to incorporate it (that's why it's the LGPL and not the GPL). The problem is that the LGPL is

That's not true. The LGPL explicitly allows closed-source programs to incorporate it (that's why it's the LGPL and not the GPL). The problem is that the LGPL is incompatible with certain use cases (embedded systems, I think the App Store, possibly the various consoles) so Unity can't distribute LGPL code to those platforms.