Yeah, it might be hard to sell a robot that can do a, b, and c as long as you already have set of devices that meet it halfway. OTOH, if it can do a sufficient set of useful things to get some traction, then you might start to see some integrations.

The thing about examples like the washing machine is, I haven't looked but I would be surprised if there isn't already a networked washing machine, less the powered door, that is meant for smart homes.