They are extremely expensive (however they are built tougher and are designed to stay on 24/24 for years) and indeed lack a lot of consumer-grade features like HDR. They are also hard to actually find & buy, you need to get them shipped and that will add another ~100 bucks to the price.

I guess image quality and response time might be sub-par too compared to a top-of-the-line consumer-grade TV.

They often have serial ports behind them, that serves as the remote control. They may support HDMI CEC for it as well?