I kept waiting for the post to mention the German company who make Things.app (culturedcode.com). It seems like a good example of the ethos.
They have been Apple-only for 15 years.
If they wanted to rule the world, they would have transitioned Things to the web and to Windows.
To do that, they would have had to hire three times as many people.
It's easy to imagine an alternate timeline in which CulturedCode had spent the past decade 'enshittifying' Things.app to rake in more money.
Exactly why they're still great. It takes courage and conviction to not grow.
Looks like the different apps (desktop, mobile, iPad) have different prices, but all are one-time payments of $10-$50.
I bought it years ago and IIRC it was just $50 for everything then.