Where "not now" could be a euphemism for "I don't want to, but there always a hope that they will change their minds later and won't force me", or perhaps it means "I want to wait until everyone else has caved, and my laptop no longer functional".
I only continue to use Windows for work because it is mandated. All new work laptops come with at least one day of entertainment called "setting up". Where the myriad options are explored for the possibility of duplicity, breaking data collection and plain old contrarianism.