Just because something isn't common now, you shouldn't rule out it in the future.
But aside from that, the arguments in the video have no real substance about vertical video in todays landscape.
I'm going to state the obvious: movies (currently) should not be vertical, and this is already well stated in the video. But the issue is OP wasn't talking about film, and the idea that vertical cant be cinematic is just completely wrong. (
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You also need to think about the landscape of how people are consuming video entertainment. Tiktok is completely vertical, and while you don't see any movies on the platform, it is still more popular than almost every other video medium currently.
Last thing i will say is that the entertainment industry is changing rapidly. To dismiss vertical video as something that will never happen is just not very open minded. People said the same thing about digital cameras, and then they became more popular and better than film cameras, so you shouldn't say that just because our current landscape isn't accepting of vertical cinema, doesn't mean that one day it will.
Inside the box? I didn't know about any box...