Possibly. For it to work as advertised you're going to have to build a network of
n APs where
n is the number devices, and each will have to have a signal power equivalent to what you would need to get the maximum channel capacity for a single device. This is the important equation.
Where B is analogue bandwidth, S is signal power and N is noise. All DIDO does it increase the signal power of the entire network by a factor of
n, with a centralised server processing the locations of each device in real time
in order to mitigate the effects of the interference from each AP. You can only imagine that as
n gets very large how much the complexity increases as well as the power requirements.
There's nothing in it that is revolutionary aside from whatever processing algorithms they have in background, which may indeed be quite clever, but don't do anything at all in the way of beating the limits on channel capacity.
So yeah, anyone touting this is basically waving one big rubber dildo in the air.