Actually, originally Thompson set out to create a FORTRAN compiler for "First Edition" Unix but then instead created B [with the help of Ritchie; the "Second Edition" Unix kernel was written in it] which was only later developed into C by Ritchie.
Completely OT again [but as Ritchie was not only the creator of C but also the co-developer of Unix maybe admissible]: AFAIK, Microsoft - before they embarked predominately on DOS etc. - actually was some sort of "Unix"-oriented company as well [Xenix]. I find it unfortunate that they withdraw themselves from that opportunity - otherwise, the PC market today could be probably totally *nix and there wouldn't have been any need for Linux [which just fills the niche Microsoft left open]...Ritchie would have been satisfied, I'm sure.
I think I read somewhere, quite some time ago now that when mickeysoft sold XENIX to SCO, (or was SCO spun out of MSFT?) part of the "goodwill" (intangible assets) was an undertaking the Microsoft would never ever reenter the UNIX market place as some part of a non-complete clause. But then I am not a lawyer and I don't recall where I read that. Microsoft vowed to destroy UNIX, I think such was stated even in their advertising. I also read that they were still doing work on PDP or VAX, and cross-compiling (for DOS?) long after everyone else moved on,
was run on FreeBSD and apache for years even while they were selling IIS, WIndows95 was developed in Canada by the outsourcing company that appears in the Copyright list before Microsoft and SCO when XENIX boots and the original MS-DOS/PC-DOS was developed as a quick hack of what he long over due CP/M-86 could/should have been by a company in Seattle before DRI released CP/M-86. MS-DOS 1.0 ran for about 10 to 15 minutes before locking solid or reseting the machine. But then I never really experienced MS-DOS before I think 2.0 or maybe 3.3. 386BSD was a free UNIX based on articles in Dr Dobbs Journal. Guys around campus put up "Free the Berkley Devil" posters as well as plastic California number plates with "UNIX:Live free or die" on their walls. FREENIX was a movement and bound to happen Linux just got there first. There was MINIX, the XINU book and other things happening but it was all very academic.