

I don’t think it’s a normal expectation for services with variable labor and materials to have a flat price associated. Certainly not for businesses buying said services. But there isn’t a single “charge per seat” software company that has a valid excuse for obfuscating pricing. Every software company I’ve worked with (and I’ve worked with hundreds over my career buying software for corps) has a “list price” for their product even if they hide it.
Google Authenticator is merely a generic TOTP token storage app. The person you’re replying to was pointing out that Google Authenticator, specifically, isn’t necessary. There are alternatives, and unless you’re using a company-owned device that restricts the apps you can use there is no way for work to dictate which app you use for TOTP tokens.
Duo, Okta Verify, and other 2FA apps that use push notifications and such, are a different beast altogether.