I don’t think this is where the robotics revolution is going to happen. The big one will be using AI to design and build highly specialized robots to automate mining and manufacturing.
Why not both?
Not to say we won't get humanoid robots eventually, but I think there's probably some low hanging fruit for people to make some other kinds of solutions. Specialized robots for industrial environment, well-thought out appliances for the home.
It would be a bit surprising if the progression was Roomba -> humanoid robot.