The ever-evolving software subscription model

I’m sure you’ve seen the ads: “Get Perpetual Office for a dirt-cheap price that’s so cheap it’s too good to be true.”  It is, though they don’t phrase the pitch quite like that. Instead, the advertisement says: “One-time purchase. No subscription. This is a Microsoft Office 365 account that activates up to 5 devices on all supported platforms, including Windows, macOS, Android, iOS, iPadOS, Tablets. You can install and activate as many times