The part where Windows applications built with C++ generally do not share C++ ABI DLLs with each other and the operating system except for certain well isolated

The part where Windows applications built with C++ generally do not share C++ ABI DLLs with each other and the operating system except for certain well isolated ones is major part of it. GCC changing C++ ABI usually meant horrific time for every C++ application on Linux unless you use something like Nix so you don't chance loading incompatible binaries.