There's no way all the libraries zip up to 75MB. Literally just the x64 CRT lib folder by itself zips up to 96MB. I think you meant more like 1GB?
C:\Program Files (x86)\Microsoft Visual Studio\2019\{edition}\VC\Tools\MSVC\{version}Edit: I feel like this whole discussion highlights the issues with the vs installer though. If it wouldn't create hundreds of folders all over the place it would be much easier to have a sane discussion about it.