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With enough money...

Larry Ellison used to have a TV projector in his house, with the light output for a drive-in movie theater but aimed at a small screen, so he could watch movies in broad daylight. That was before everyone got bright screens.

I don't see how the result would avoid being either uncomfortably bright or still having shitty contrast due to the unavoidably high "black" levels from the ambient light.

Modern HDR screens already cause the same subconscious perception as the sun would. You flinch, your eyes adjust, you even move a little bit back and feel a kind of warmth that isn't actually there.

Anyone permanently burned their retina yet?

Well HDR screens are becoming more common so we're moving in that direction.

Also, simulating realistic processes is not incompatible with tonemapping the result to be able to display it on limited screens.

Watching Sunshine (2007) will be a real experience when that happens.