It's too bad Modula-2 didn't come along earlier to compete with C. We could have avoided most of the security problems with C and C++ programs.
Instead, here we are, 50 years later, finally moving toward safe languages again. Took long enough.
Original Pascal was dire at anything except learning Pascal. Strings were type alfa- 10 character strings. Turbo Pascal was the first decent implementation and whipped the pants off its rival UCSD-Pascal. Delphi has been dead though since about 2000 but there's a lot of legacy code around and I'm one of a team of four that look after (maintain and enhance) a 1.35 million Lines of code property management application. A business laptop from 2020 can compile all 1.35 millions lines in around 11 seconds.
Unless you were an ace C++ Windows developer, Delphi was the next best programming language for using the Win32 API and doing low level COM stuff.
It is and it is not. It is used in many industrial companies for example to write windows based desktop applications. I have couple of my own Windows based products that bring some money. Even though those are about 10 years old I keep them up to date with all new technologies that make sense and port to every new version of Delphi. This is actually very easy and does not require much time. There is also more than enough libraries and components to do just about anything. FFS I do interrupt based device control with the rate of 256 requests / s over USB.
Still for servers / NO GUI I very much prefer C++.