I assume we're only comparing to operating systems, as I would say that e.g. Chrome as an open-source project is just as impactful if not more so. But generally

I assume we're only comparing to operating systems, as I would say that e.g. Chrome as an open-source project is just as impactful if not more so. But generally speaking the Linux support experience is decidedly worse than *BSD or any proprietary OS. It is much harder to get patches upstreamed, and many hardware have errata that never get fixed. (If you haven't experienced this, it might be because companies like canonical and red hat maintain their own patches to support their customers.)