I know I am tooting Sentry's own horn a bit here, and since I was involved it is close to my heart. We struggled at one point with how to build a large company on top of an open source project, and we never liked the idea of simply carving out parts of the codebase and marking them as closed source (open core). At the same time, there was always the latent risk that even if you put 95% of the energy into the product, you were still not fully in control and someone else exploits the economic value without investing.
Our way of dealing with this was delayed open source publication. That led to the FSL [1], and later to bootstrapping the Fair Source initiative [2] to establish an umbrella term that does not conflict with Open Source. What I have found interesting in the years since is that many companies are wrestling with the same problem, but feel that the two year head start the FSL gives is too aggressive.
I actually still find that surprising. I would like to know whether this is a legitimate concern that two years is not enough, or mostly a perceived one. To me, moving to an Apache 2 or MIT license after a relatively short period is a much stronger statement than a license that risks the project effectively ending if the commercial entity is unwilling to relicense it more openly at the end of its life such as the O'saasy license.
Our way of dealing with this was delayed open source publication. That led to the FSL [1], and later to bootstrapping the Fair Source initiative [2] to establish an umbrella term that does not conflict with Open Source. What I have found interesting in the years since is that many companies are wrestling with the same problem, but feel that the two year head start the FSL gives is too aggressive.
I actually still find that surprising. I would like to know whether this is a legitimate concern that two years is not enough, or mostly a perceived one. To me, moving to an Apache 2 or MIT license after a relatively short period is a much stronger statement than a license that risks the project effectively ending if the commercial entity is unwilling to relicense it more openly at the end of its life such as the O'saasy license.
[1]: https://fsl.software/
[2]: https://fair.io/