Re: Show's Delphi's worth!
Alcade, I was going by TIOBE's numbers there, which show Pascal + Delphi at approximately #6. I'm sure it is much lower on github and similar places compared to an open-source language with a big open-source community, for several reasons: Delphi is not open source, the vast majority of code written with it is not open source, and many Delphi developers who are in large organisations may be slower moving to something like git than older source control systems. I know of active Delphi libraries still hosted on SourceForge, for example.
It seems to me that you aren't considering things like that. I don't worship it like a religion, but I do try to take a reasonable balanced view. One of Delphi's problems is the internet community of people who seem viciously against it, posting at every opportunity that it is bad, unused, etc. For something unused, it sure has a lot of interested critics. Personally, I wish those people would not comment unless they had something useful to say.
As for Google, Facebook etc: I have no idea if those companies use it. I know even Microsoft uses products built with Delphi - that's different to them using it in-house, of course. I also know, from personal knowledge, that Delphi is used by several space institutes, by many scientific software companies doing things you may not have heard of but with core, high-tech customers, etc. (I know because I've worked on several of those software products.)