[jinseokim]

Some softwares: Yes. People with Mac are advised/forced to use Windows. For instance, Uwayapply, a college admission application service, doesn't support macOS.

Or: they provide .pkg file to install similar program.

Most of them want sudo. They use root permission for various purpose, but the most impressive one for me was registering their CA certificate on Firefox root store, to support WebSocket over TLS to localhost on Firefox.

[themoonisachees]

Nice! That way you can extract the private key and cert from the app and spoof the local server! I bet that cert is valid for *. and the same on every machine as well?