Modula-2 had already lost that race. It was another extended, incompatible Pascal among myriad others mostly still called Pascal. Scud-pascal, Apollo Pascal, Clascal, Turbo Pascal, what-have-you.

You mean like the myriad of C dialects like K&R C, Small-C, RatC, DBS C, what-havw-you.

Different compilers, same language.

Thanks for providing how little you know what they were capable of, versus proper C on UNIX.

Code for any that lacked features would still build on a more complete implementation.

This is fundamentally different from the Pascal case where extansions absolutely necessary for the compiler to be useful at all differed radically from one to another.