I love that "offline-ready" is a feature that's becoming more and more supported and prominent. I don't know anyone else in the power user community who doesn't have home internet, but since getting rid of ours, I've made that feature a high priority of all apps I've been dreaming up and selling.
I've even gone so far as to remove the concept of "live data sync" from all my apps, partially because it's so incredibly error prone and hard to get right, partially because it tends to make software seem laggy and slow since it shows stale data while loading live data in the background, and partially because usually it's unneeded as a built-in feature if you're just using files, which can then be synced with any of the many file syncing service (iCloud, Dropbox, OneDrive, Box).
Although it's very doubtful other power users will adopt internet-less lives, if more of us did, not only would we be more productive, but we'd all have more incentive to make "offline-ready" a much better experience and even move to "offline-first" like I aim to.