Most small cameras produce images that display reasonably well on my 1200x1600 or even on my 1080x1920 monitor. Even there some images just won't display well full screen.
However now we are seeing much bigger monitors and here is where the images start to fail. The problem is not pixel count but rather resolution. It will be interesting to see if this newer tech is able to improve resolution to the extent required to display cleanly on large 4 or 5G monitors.
At the moment there is also a huge fiscal gap between a $300-400 superzoom camera using a tiny sensor, and even the entry level in the mirrorless 4/3rds micro series which tend to cost $2000+, once you factor in a couple of decent lenses.