The official Raspberry Pi LCD is 800x480, and there are many other popular displays that use that same resolution, at various sizes (ie Pimoroni Hyperpixel(Adafruit)). For example, I have a resistive touch 5" HDMI display at that same resolution.
It seems like a low resolution, and in experimenting with a Pi 3 and Ubuntu Mate, I confirmed that it was indeed to small to really do anything. I'd expect similar problems with Windows at that or similar resolutions.
Yet, obviously people are buying them if the manufacturers keep selling them. What am I missing? Is there a scaling setting in Linux to make this resolution a better user experience?