You might be disgusted by the capitalist, but they have and will always exist. The problem is absolute power. When the capitalist or any other have absolute power that's when the unfairness prevails. It is possible to set limits to the capitalists, checks and balances that protects all members of society, while offering opportunities.

Currently the anti-capitalist approach only seeks elimination of the capitalists, together with the advantages they bring to society (they exist even if you don't like them or don't agree with them). Anti-capitalism is now a destructive force that don't consider any alternatives but destruction, and that's the reason why it is not viable. It seeks revenge and punishment instead of creating a better society.
Would we have more research and development with anti-capitalists in power? would we have better education and healthcare?

There are examples of very good experiences with assembly societies, but not a single one of a successful anti-capitalist society .