My impression in Germany and the US was that cheap monitors and TVs come with HDMI, but not necessarily displayport. Anything higher priced or aimed at design, graphics, office work comes with display port and (often also) hdmi. For example all dell ultrasharp models, hp z27, samsung's uhd monitors, all 4k LG ones.

In addition there are now several monitors offering usb-c connection for video+power+usb hub functionality (e.g. see the wirecutter recommended 4k monitors), which seems convenient.