Earlier quoted context omitted.
For every couple year major versions (with decently advanced notice it's coming and/or a recency allowance) I think it's fair to charge anew but for minor improvements over the lifecycle of a major version I think it's fair to want to buy everything that will come in the major version up front if you're making a one time purchase. Tons of software is this way from Sublime to Windows to ZBrush to an absolute crapload…
They do something which is "common" in Apple-land (Dash for MacOS does this, a Twitter client did this as well, over and over): They get the same app, add some features, call it v2, launch as a new app and remove v1 from the store. They don't "give" you the new version. They take away the app you paid "once", and provide you with a version with an expire date. So you have no choice. You either pay them, again, or los…
That is "forever updates" = no but "take away what you had" also = no. It was a period of updates with a dropoff date of where you left off. This lines up with my expectations of a one time purchase in that I'm not expecting 50 years of feature updates when buying software just because they haven't went out of business yet I'm just expecting I keep the feature access I have at the end, which is what these posts from many different folks are all claiming.