See layer8’s comment above. Let’s say there’s a sweet spot somewhere between ultrawide and square. Why would 16:9 be ideal? The golden ratio is pretty close to 16:10, which is the basis of A4 (etc.) paper.
> Why would 16:9 be ideal? The golden ratio is pretty close to 16:10, which is the basis of A4 (etc.) paper.
No it isn't. A4 paper is roughly 7:5 (actually sqrt-2). The fact that people consistently get this wrong suggests that the golden ratio isn't actually all it's cracked up to be (IME the golden ratio makes for things that are too wide. My laptop has a 3:2 screen that I'm very happy with)