Why a Robot Revolution is unlikely to happen.

It is a common theme in Hollywood movies, robots rising against their masters and attempting to exterminate humanity. But why would we make laborers smart enough to rebel in the first place? Robots that are no-where near sentient are already used with great effectiveness in manufacturing, and both construction and agriculture make extensive use of machines that could easily be run on autopilot. The only jobs that sentience would be needed for in those fields are design and supervision, which would likely be filled by humans. Essentially the only things that near-sentient automatons could be used for would be personal assistants and millitary. Note that the robots designed for the purposes below could be bioroids instead of completely metal or plastic automatons if biological components turn out to be cheaper.

Japan is currently interested in humanoid robots mostly because of their lack of population growth, so that they can fill the gaps in their workforce caused by the aging population, and to help the increasing proportion of their population that is retired. Assisting an elderly or disabled person might require a significant amount of decision-making, but it is unlikely that human-level intelligence would be necessary. This would probably lead to android companions owned by perfectly healthy people and at least some would probably be Sexbots, so gynoids would probably be more common than androids. The problem is that there would be the potential for abuse of these androids and some manufacturers might make them more intelligent to seem more realistic. If abused androids were able to communicate with one another and able to feel pain they could organize and attempt to get back at their owners, possibly obtaining upgrades to make them more intelligent.

Military robots would be a far greater risk, combat situations often require more problem-solving ability than following a blueprint so robots designed for combat would either have intelligence compareable to a human or be remote controlled by human soldiers. It is inevitable that robots will be used for war as humans don't like to be killed, the problem is that if the robots are smart enough they might decide they don't like being destroyed either. For that reason it might be recommended that robots be designed with something like Isaac Asimov's three laws and only used for non-lethal force, and the only robots designed for lethal force would be teleoperated. I honestly wouldn't be surprised if human soldiers with cybernetic enhancements or power armor saw more use with the military than fully autonomous robots capable of lethal force.

Overall there is little threat of a robotic revolution due to the fact that there simply wouldn't be very many robots with the intelligence to rebel.