CRTs used to be cheap because they were made in high volumes and had a large ecosystem of parts suppliers. If you were to make a CRT today, you'd need to fabricate a lot more parts yourself, and the low volume production would require charging very high prices. You'd also have to deal with more stringent environmental laws, as CRTs contain many toxins, including large amounts of lead.
It's much cheaper to emulate CRT effects so that they work with any display technology. Modern LCDs and OLEDs have fast enough response times that you can get most CRT effects (and omit the ones you dislike, such as refresh flicker). And you don't have to deal with a heavy, bulky display that can implode and send leaded glass everywhere.
It's much cheaper to emulate CRT effects so that they work with any display technology. Modern LCDs and OLEDs have fast enough response times that you can get most CRT effects (and omit the ones you dislike, such as refresh flicker). And you don't have to deal with a heavy, bulky display that can implode and send leaded glass everywhere.