Why dont they make 20 inch 1080p Televisions?

Question

Why dont they make 20 inch 1080p Televisions?

Answer 1

20 inch televisions dont need to be that high of a resolution, Why would you want such a high resolution on a tiny screen?

Answer 2

It isn't practical for a screen that small and has to do with the law of diminishing returns.  Sales would be low because people would normally buy a larger screen for that resolution.  720p resolution fills up that screen size as it is.

Answer 3

You would not need such a high resolution for a small screen.  720p is more than adequate for TVs 32" or less.  Also, since the pixels get so small, it is probably harder to make such small screens with good contrast.