The volume of a screen doesn't change with a curve though...
It does still massively effect the volume of the way it fits in a square/rectangular room does though, and on a rectangular right angled desk.
90% of rooms have straight lines and right angles. A curved object uses less efficient use of space, it's just a simple and undeniable fact.
A curved object creates two giant wedges of unused space against a flat wall or parallel to a flat wall in a room.
Like I said I said in my very first post, a curved room makes for more efficient use of a curved screen, a flat wall in a right angled room with a curved object is less efficient use of space. Elementary geometry.
If it helps you figure it out, those kids toys with squares and circles that you fit in shapes clearly help demonstrate this concept.
Another simple way of looking at it is could you fit more Pringles in a can if they were flat or curved as they are?
The answer is of course you could fit more flat ones in there. Curves create negative space that can't fill be filled in conventional spaces that use straight lines and right angles.
That should be a simple way of understanding curved geometry.
No one is criticising your screens or your choice to get them, just pointing out some basic geometry.
A curved monitor is about triple the depth of a flat screen viewed side on, and it intrudes into triple that space. it's just a simple geometrical fact.