alt Hacker NewsThis is great work and good news, however if you want to guarantee a long-term public benefit, use copyleft without a CLA! A more well-funded company can fork this and make the new work proprietary, meaning you did all that initial development work for them for free.
Apple and Microsoft are the two most likely parties to do so here. This isn't a theoretical risk.
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BSD-0 is a public-domain-equivalent license. The guy who published it is one of the few people who has actually been involved in a lawsuit to try to assert a copyleft license. The whole thing was such a bad experience for him that he decided copyleft licenses are a false goal.
You should watch his talk:
https://www.youtube.com/watch?v=MkJkyMuBm3g
(He used to be a maintainer of busybox, a GNU clone for embedded devices. He then ended up writing toybox, a similar project under the more free MIT license.)
Does anyone have good examples of this actually happening for end user software (like Ghostty is) and where in the long term proprietary fork won? Most of the recent variations of this that come to my mind are related to cloud infrastructure. Stuff where you have serious business customers.
And in some of those cases GPL wasn't enough to prevent it. Niche end user utilities, where original is available for free have little room for monetization. And in many cases existing users are already choosing the open source option despite the existence of commercial solutions, or where it's too niche for commercial solutions to exist.
Only thing that comes to my mind is VScode with all the AI craze. But that doesn't quite fit the pattern neither is the Microsoft underdog, nor it's clear that any of AI based editors derived from VScode will survive by themselves long term.
There are also occasional grifters trying to sell open source software with little long term impact.
Using a copyleft license can add friction that reduces the amount of value your software can create in the world.
I'd honestly rather Apple and Microsoft ripped off my work if it meant that my work provided more utility to a larger number of people.