Atmos is likely scalable, so I doubt that they would need the processing power to simultaneously juggle up to 128 individual objects and up to 64 separate outputs (speakers) for consumer systems.
Besides, you know how this is going to work out: at some point it will be on a chip, comoditized for consumer electronics manufacturers. A couple years back, it was remarkable to see every single Onkyo receiver (including the cheapest models) have 4K video scaling built in. And so it will go with MDA.
More interesting will be whether the studios are willing to hand over an Atmos soundtrack to consumers, where every piece of dialogue/music/effects has metadata attached. And, if they are willing, how it will sold to consumers (delivery media). I'm sure all of this is being thought about right now, but it will be interesting to see the logistics of making it a reality.