The decision to make its Affinity applications a one-time-purchase with no ongoing subscription fees has earned it a loyal fanbase
That is putting it mildly.
I am an occasional user. Once or twice a year I create something that needs proper DTP software. To pay for a subscription is complete nonsense, so for the past decade or so I made do with an ancient version of InDesign purchased before they switched everything to subscription. Obviously, that's not working too well anymore.
So I use the 30-day trial of Affinity Publisher, found it does 95% of what I did with InDesign and most of it equally well and some things even better. I'll find workarounds for the missing 5% (or I'll figure out that it does them after all, just hidden away somewhere, such as cross-document references).
The fact that it's a one-time purchase was the #1 deciding factor. Adobe's business model simply doesn't work for me. And certainly for thousands of people who are in similar positions. It might work well for those whose everyday professional tool is one or more Adobe products, but not for occasional users.