Realistically the paying subset of users of a language is always going to be a small number of people.
I am more than happy if on Windows, C gets reduced to the subset required by ISO C++.
Time to move on, C was already outdated in the mid-90, versus C++ARM, Modula-2 and Object Pascal.
Microsoft Security center is quite clear on the damage it has brought to the industry.
Objectively false, given the consistent popularity of C.
Plus, of course, the bad things about C are also bad about C++, in that C++ is more similar to C than different from it.
C's copy paste compatibility in C++ is the Trojan horse that ended up being its security Achilles heel.
However even with that, the C++ community and ISO C++ actually care to improve the language security story.
The same cannot be told for ISO C.
Actually even Microsoft does more for it with its Checked C research and SAL security annotations.
Note that i refer to the compilers specifically, but even the IDEs you mentioned aren't that great. Visual C++ has went mostly downhill since VC6, becoming slower and even removing features (e.g. last time i tried it i couldn't use a bitmap font) or obfuscating them (installing a library "system-wide" is trivial in older versions of VS, but after 2008 or 2010 i think that feature was removed). C++ Builder's UI/IDE also went downhill after they got rid of the Delphi 7 interface and tried to become Eclipse and it also has became too unstable and slow. It does have a few niceties (i like that when you save your project it automatically updates the header file includes at the top), but nothing that makes it worth the negatives (though TBH i haven't spent much time with it because i refuse to rely on anything with DRM so i might be missing some gem covered under that bloat). Qt Creator is neat, but i could never get used to its interface (also it is free, so i'm not sure why you included it in a list of paid products).
Also IMO all the above do not hold a candle to the older Borland C++ Builder when it came to development experience. I do not think there is any C++ development environment that comes close nor i think it is possible to make one by stitching together a frankenstein of a product out of otherwise independent bits and pieces that are oblivious about each other (in other words anyone who thinks that something "based on" Clang or GCC or whatever, stitched together with LLDB, GDB or whatever and some GUI framework thrown in - usually Qt - would fit the bill is totally missing the point).
I included QtCreator, because for the full experience you need the commercial Qt offerings as well.
Windows now has a C++ package manager (vcpkg), so you can install libraries as you want.
Actually Clang provides the necessary IDE hooks that GCC doesn't.
I also consider the UI designers (UWP C++/CX is not that bad), graphical debuggers, pre-compiled headers database, incremental compiler, incremental linker, PGO integration, and being able to drive them without memorizing a ton of switches, part of the whole experience.