I also recommend the Affinity apps and hope Affinity continue with the perpetual licence model.

In contrast, the SaaS subscription model is a juggernaut that shows no sign of slowing down and is eating the old desktop app model. For example, Sketch is a popular desktop app for creating UI designs and used to offer a perpetual licence. But Sketch faces competition from Figma (and lesser from Adobe XD), and Sketch are now wholly a subscription service.