Air-gaping applications has become way harder when everyone introduced the cloud-based bullshit. You either lose half the features (due to not being online) or the whole application due to needing to upgrade the license/new OS where the old app doesn't work, or other bullshit.

And, sadly, that's where most people are. Convert half the application to cloud and then deprecate the features in offline mode. And yet it's cheaper to just do these calculations offline.