You want to sell more monitors than your competitors. Do you a) advertise a higher resolution and DPI than them or b) advertise a larger screen? B has been winning out nearly every time, as most consumers will either not care/understand about the DPI, or will understand the resolution but subconsciously think better of the monitor which is larger.
However, with laptops, you can only keep making them so big (and indeed, it seems that the 17″ MacBooks are getting axed). Similar to phones, the only innovation that makes sense in this market is to increase DPI.
However, with laptops, you can only keep making them so big (and indeed, it seems that the 17″ MacBooks are getting axed). Similar to phones, the only innovation that makes sense in this market is to increase DPI.