Earlier quoted context omitted.
IMO. There should be a market for: - Dumb panels (not monitors). Perhaps stripped down recycled smart tvs. - Smart tvs but with user replaceable firmware. Think OpenWRT for TVs. Maybe the same guy who does the dumb panels could sell those but with a raspberry pi in place of the logic board. Of course a monitor solves these issues but these are normally smaller and more expensive.
"Dumb TVs" would cost more. It's hard to market something that costs more and has what most people would perceive to be fewer features. They would cost more because post-sale content sales and advertising generate revenue for TV manufacturers, which they use to subsidise the device sale price, because it's such a competitive, low-margin, market.
https://www.cdw.com/product/Samsung-40-Full-HD-Non-Smart-Hos...
https://www.cdw.com/product/samsung-hg40nf690gf-nf690-series...