The webcam market is a niche market. Even game streamers, arguably the most "consumer" like target audience that cares about quality, will often put the image of their face in a corner of their screen.
The simple fact of the matter that the target for webcam seems to be to be either good enough or to be better than the competition. Neither of those are very high bars.
There are some improvements in webcam land. There's a trend towards more higher-quality consumer webcams even if they're ridiculously expensive for what they deliver.
One problem I have noticed with using phones as webcams is that often the image will look distorted if you're not right in the center of the camera. The closer you go towards the edges, the more your face will get distorted in width or in height. This is a natural consequence of how these tiny lenses are able to get such a wide picture so I can't really fault phone manufacturers for this, but it's something to keep in mind when you pick the more obvious solution and just stick your phone to your monitor.
The simple fact of the matter that the target for webcam seems to be to be either good enough or to be better than the competition. Neither of those are very high bars.
There are some improvements in webcam land. There's a trend towards more higher-quality consumer webcams even if they're ridiculously expensive for what they deliver.
One problem I have noticed with using phones as webcams is that often the image will look distorted if you're not right in the center of the camera. The closer you go towards the edges, the more your face will get distorted in width or in height. This is a natural consequence of how these tiny lenses are able to get such a wide picture so I can't really fault phone manufacturers for this, but it's something to keep in mind when you pick the more obvious solution and just stick your phone to your monitor.