>as the physical limit is the size of the "dots" that make up the phosphor layer.
Another physical limit was the weight of the glass. The larger the display, the glass got thicker and thicker to "lens" the beam correctly so the edges/corners were straight. We had a Sony reference CRT for our film transfer/color correction suite that was a 32" HD monitor. MSRP was >$30k for it. (Sony's reference monitors were roughly $1k per inch in pricing.) The thing was stupid heavy requiring a minimum of 2 people if their names were Arnie; otherwise it'd take at least 3 maybe 4 typical post house employees. All of the weight was in the front.
Another physical limit was the weight of the glass. The larger the display, the glass got thicker and thicker to "lens" the beam correctly so the edges/corners were straight. We had a Sony reference CRT for our film transfer/color correction suite that was a 32" HD monitor. MSRP was >$30k for it. (Sony's reference monitors were roughly $1k per inch in pricing.) The thing was stupid heavy requiring a minimum of 2 people if their names were Arnie; otherwise it'd take at least 3 maybe 4 typical post house employees. All of the weight was in the front.