What happened to 42 inch+ 16:9 monitors?

I am using an Asus PG43UQ these days but really want to upgrade to OLED. There seems to no longer be anyone making large monitors. Everything is either small 16:9 for some ridiculous 21:9 widescreen.

I know I can use a TV but TVs these days are full of crap I don’t want. I just want a good display and no spyware.

What happened to the monitor market?