But, even if someone doesn't more or less set up a studio as I've done to a degree and some of my colleagues have done, there are some pretty basic things related to lighting and webcam height that can be done pretty easily by most people. Though I'd add that comms problems are also a frequent annoyance and there's not a lot people can do there.
I'd add though that I normally move around my house when I'm working. Sitting at a desk all day in a "studio" doesn't really work for me.
You need a 2.1 MP camera to get 1080p, which the vast majority of laptop webcams don't do. The last time you could get a 2.1 MP main camera in any half decent phone was probably back in 2015. Laptop makers just didn't care, it wasn't a priority for most users before Covid.
Finally higher quality build-in cameras are being included in iMacs. I hope very soon they start making their way into their laptops.
It is interesting that companies are willing to put massive, tumorous lumps and display cutouts on smartphones in the name of picture quality but not even a little bump on laptop lids.