There are high rises all over the world, and fires in them, but it does seem that this building went up like a torch ( indicating the cladding was a problem...or the fitting of it.) An external fire escape would be of no use ( too high anyway) would sprinklers have helped, unknown, but hope the investigation finds the reason quickly and then the government can act in all the cases of other clad high rises.
I lived in a concrete (pebble dashed) high rise once, no cladding, it's still there, maybe doesn't look as attractive but safety comes first.
Must say, that although it would have been better for T May to talk to survivors,
She would have come in for a hard time even though it isn't her fault, simply because she represents the Government.Corbyn is the Opposition, so wouldn't be yelled at, and neither would the Queen.