I originally set out to do L0 with a noncommercial license only. Then I had half a dozen good conversations with copyleft friends, who pointed out that (1) they

I originally set out to do L0 with a noncommercial license only. Then I had half a dozen good conversations with copyleft friends, who pointed out that (1) they really liked what I was doing, (2) they'd never use anything but a copyleft license, (3) even the (A)GPLs were compromise implementations of the values they really hold dear. Open Source licenses can't discriminate against groups or fields of endeavor. But groups discriminate against Open Source all the time. A strong copyleft license could be both Open Source and nearly as effective as a noncommercial license in driving financial support to OSS maintainers. Under L0-R, companies can choose: Either they make their work available as Open Source, or they support others who do.