It is actually a very interesting scenario, and possibly coming soon to disrupt money flow in our economies. Right now people go to work, they make money, they buy stuff, money goes to factory/business, business buy materials, make new stuff, pays employees for work making stuff, people spend...etc, etc. Money goes in circle. Also people make money and pay taxes, government spends on services for people acting like one communal customer, money goes to businesses and people. In close future however, there will be almost only robots working in factories and services. Robots don't get paid and they don't buy stuff. Money flow as we know is interrupted.
Technically there still should be prosperity. Robots produce goods and serve, people consume. The problem is how do we distribute goods and services without people making money? Give them for free equally, or by needs? Total communism.
Should we tax businesses to the max? Businesses produce and sell, government gets most of the money in taxes, gives money to people (huge welfare system), people spend buying stuff, money goes back to businesses. The money flow is restored. There is another problem, industry can pack and leave to a country with lowest business tax, leaving high tax countries without production and will sliding into a poverty. Unless in the future, there is same high business tax for the whole planet.
Anyway, this problem will crop up soon, when more and more factories will employ only robots. There is interesting phenomenon happening in US during last decade, and related to this phenomenon. Thanks to robotics more and more US firms comes back to manufacture in States. When robots produce stuff the labour cost is of no consequence, therefore the best business location is close to the consumers, for cheaper and faster transportation. It is a good new for States, business people, few professionals, but not necessarily to US working force. Businesses come back but it doesn't translate in lesser unemployment and richer working class. This disrupting trend will only speed up, and at some point money flow will be severely skewed with huge consequences to whole economy and people. New economic model of money flow might be urgently needed.
One of my ideas is to make sure that all citizens become shareholders of local companies, or micro shareholders in every company in a country, and will be paid in money as dividends, or some kind of profit sharing. Money flow will be restored from producer to customer, and money that people make will mirror success and production of entire economy. Here is a funny question. Should citizens become shareholders at birth or at age of 18? You don't need to buy shares, it is an automatic process to share economy equally among every citizen.
I'm afraid, we like it or not, beck door communism might be around the corner, even if it is only on worker or consumer side. Business people and monetary capital will still operate as usual. Unless, at some point, robots can take these jobs away too?