Robots and technology will replace workers

The reality of capitalism and technology is that machines are increasingly competent at work. This means for people who sell their labour that the machines encroach increasingly on their market. If people are able to employ machines cheaply instead of manual workers then the demand for labour will fall and manual labourers will be replaced in the market.

It can also be argued that machines will make it more difficult for employees in the 'knowledge economy' who sell information and knowledge. Computers have democratised access to information and as a result it is much easier to become an expert in a topic and to access the knowledge of an expert. So even (an employee in) the knowledge economy is not immune from the advance of technology.

Machines destroy jobs and since capitalism is able to provide machines then capitalism itself destroys jobs.