So hasn’t the movement succeeded, then? If startups that have built their businesses on open-source software can raise hundreds of millions of dollars in venture capital? If a company like Microsoft, which once positioned itself as the enemy of open source, is now funding key projects?

That depends on what you think open source is fundamentally for. For some, open source is about making software less buggy and more robust by widening the pool of possible contributors. For others, it’s about giving users—at least the more technically skilled ones—more control over the software they use. For the most cynical, it’s a way to dupe people into working for free.

But I always thought there was something more to open source—something more radical, something worth fighting for.