Anyone with the desire could set up such systems today. But they don't. Because they're expensive, inaccurate, and ultimately not all that useful in the social context. There are places that do employ such monitoring, but they're a corner case.
Trust is a core commodity in the workplace. It's usually more profitable to establish a trustworthy workgroup to accomplish some goal than it is to accomplish some goal WHILE monitoring the workgroup's every move for infractions.
Don't amazon warehouses already monitor workers in this much detail? Just yesterday I read someone talking about how managers get reports containing, amongst other things, how often a person was standing still. Lots of companies squeeze their employees like this, especially low paid employees.
Call me a cynic but since the power button stopped being a power button I have trust issues. In the end we'll have mmWave chips our company devices that can tell middle managers if we've been at our desk for all 28,800 seconds of the work day and exactly how hard we've been working, that's a more likely outcome than saving a kid in a hot car.