[MatthiasPortzel]

That license is the Business Source License, created for MariaDB I believe:

=> https://mariadb.com/bsl-faq-adopting/ MariaDB - Adopting and Developing BSL Software

I've also noticed Sentry using it. I think it address one of the the main criticisms of proprietary licenses, while still allowing a company to form a considerable moat around their software. (I think we can agree, death of author + 70 years is way too long for code source, but 5 years of copyright seems perfectly reasonable.)

[imtringued]

When I see people argue about government intervention, I always think that if the intervention is going against the wishes of people, there will be a private sector attempt to undo or reverse the government intervention but equilibrium isn't guaranteed.

Too long copyright durations and too stringent distribution restrictions are undone by open source projects. This does not result in an equilibrium because there is a vast space of projects that need to be proprietary in some dimension and open source in another. The equilibrium solution has to be a hybrid of the two approaches.

Side none: An equilibrium is like a limit of a converging series. You don't have to reach it, just get close enough until you are happy aka |x_i - x|< epsilon