But on the flip side, most physical trading floors are closed. Can't see the last few lasting much longer.
I believe the remaining ones are effectively TV studios for business channels, so they have a completely different purpose now.
But I don't think anyone believes those have more than a couple of years left in them.
Electronic trading does change dramatically the shape and profile of a trading floor. Introducing central clearing with margining not so much.
You won't achieve electronic trading anytime soon on products where there are perhaps at most 200-300 buyers in the world, must of who are only interested in buying big chunks.