The article focuses on the technical aspects, but I think the economical ones play a bigger role here.

They are misaligned here. What's good for the app user is not necessarily good for the people making the app.

I know several companies whole second or third round of investment was very much conditional on them making the pivot from "on premise" to "SASS". On paper, an on-premise app that I can manage on my own infrastructure seems more interesting for me as a consumer. But for the investors of those companies I just mentioned, having a SASS offering is seen as "having a bigger hold on your customers".