[RazrFalcon]

>because they support binary dependencies

Without an ability to tweak build flags. Which makes them useless. And since they are not really crossplatform either, you better stick with portage, which is still far behind cargo.

[pjmlp]

So useless, that they get used daily by millions of C++ developers, and was one of the top requested features for vcpkg.

Sword fighting gets tiresome after a while, and not all businesses enjoy shipping source code anyway.