I also wrote a test tool in Delphi that exercises ASIP's support for Windows filesharing calls. This is a function of what's being taught in the schools today. If you're teaching someone in elementary school a first language, anything other than C is seen as a waste of time and effort. I don't agree, of course. This isn't to say that the trend can't or won't be reversed.
Businesses are result-oriented.
The switch was in full swing when I got to Apple, although there was still an abundance of support for Pascal. If I remember correctly, there was Think Pascal, MacPascal, and MPW Pascal. That last point is important. C wasn't written to be readable or easily maintainable. That fact has cost the industry a lot of money.