Many years ago I asked the same question and did not find any companies that are based on FreeBSD a wide. Sometimes there are pages on the Internet where you can see 'super-company name use FreeBSD!', however it is used as a loader for any company firmware ( Sony Playstation, NetApp ) to help the company not to violate GPL. Or somebody in company run FreeBSD as router for fun. Even Netflix used FreeBSD only for http static content. All internal services and application (e.g databases, processing, billing) run on Linux, not FreeBSD. So I think that FreeBSD is hobby operating system for localhost and virtualbox only. Although I remember the time when every second company used FreeBSD in the hosting services and ISP ;-( It's my personal opinion of course. I will be glad to see fresh (from 2017) articles or reports where representatives of large companies will honestly say: "The foundation of our IT infrastructure is the FreeBSD". And it is desirable with details, without dry phrases "We use BSD, hehe" ;-)
