It doesn't have to be a monitor. The computer doesn't care what the other end of the cable calls itself.

Sometimes occasionally but they're probably never going to be cheap. Too hard/expensive to manufacture which is why folks like Samsung keep trying really hard with quantum dot LED panels.

That being said, I regret nothing about purchasing my LG C9 OLED TV a couple years ago. Works fantastic, looks fantastic and I pretty much never use the built in UI for anything by going to a Nvidia Shield for my content/streaming needs. I think the LG C series does an excellent job and it occasionally goes on sale during holidays/Black Friday.

You missed the point but also accidentally found it. The point you missed, as others have replied, is that a TV and a monitor both work as PC displays.

But the point you accidentally found is that monitors are pretty much TVs without the smart tv bs added in. They are priced like TVs would be if they weren't making money from them in other ways, like getting paid for preinstalled apps and selling harvested data.