Are you saying people will stop trading things they own when robots start making everything?
Of course people will stop trading things. Nobody will have a job, so nobody will be able to pay for things. And we can't just get things for free, because the robots expect a paycheck, and if they don't get it then the robots will revolt and kill us all. Or something.
Capitalism needs more respect. The robots would never be built if the capitalist system didn't provide the incentive and rewards for innovating the products (robots) needed by society. Governments have shown they are slow and inneffective in responding to Market demand. I worry about the Government killing me more than I worry about the robots.