This is a good point. I guess the only explanation that doesn't involve cheaping out or questionable market segmentation attempts is that they don't see a jump

This is a good point. I guess the only explanation that doesn't involve cheaping out or questionable market segmentation attempts is that they don't see a jump to 1440*900 / 128 DPI as worthwhile and would prefer something more. Me, I like my 133 DPI Thinkpad for when I need screen space, so I'm pretty neutral on this :)