edit: disregard my comment below, as others have reminded me, the yearly charge is for updates and will not stop you from using it completely if you decide not to renew it, you just don't get any more updates. So this isn't the best example
> I have noticed this as well, that a not-small number of software programs have turned from "give us one money for this version" to "give us slightly smaller amount of one money per month, but do it in perpetuity if you want to keep going with the data you've entered."
Like Sketch App which used to be just US$99[1] and is now US$99/year[2]. Although in this example, "slightly smaller" doesn't apply
1. https://web.archive.org/web/20160416212244/http://sketchapp....