And also more expensive :) I wish I knew if that was because the crapware and ads on smart TVs are actually reducing the cost, or if it's just that smart TVs use crap hardware and software by comparison. Given how laggy they can be, that wouldn't surprise me.
If you get quotes from chinese sellers on panelook, you'll find that monitor panels+drivers are cheaper than TVs with the same specs, even at 1pc pricing.
At least in terms of the actual display parts. The smart TV probably has some processing capabilities that are incomparably better than what you'd get in a monitor. This is, of course, used to display ads. However, the ads are necessary to subsidize the cost of the powerful SOC... wait, why do we need the SOC again?
It's not clear whether they have HDCP, but... surely they must? That's table stakes for a computer monitor.