And earlier still TVs were 5:4. There are some TVs wider than 16:9. But it's a stupid aspect ratio, especially on laptops & tablets. The 1600 x 1200 (4:3) laptops better than 1920 x 1080 (16:9), unless you mostly watch video for TV (cinema can be any aspect).
Also 16:9 (AKA WS) for TVs predates LCD, HD and Digital. Though WS without big HD screens was stupid.
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