People need to work in order to feed their families though. You can make office workers work from home; industries that mostly rely on manual work have no such option. Not to mention that without thousands of people doing their daily work the society couldn't function and would eventually collapse. The whole food production and supply chain, waste collection & management, power networks and supply, water supply and sanitation, telecommunications, and so on and on and on. It's incredibly naive to think that most people can afford to just stay at home and everything will be fine.