the means of production are only controlled by an outside force through the power of the state. Without a state capitalism immediately falls away. The basis of capitalism is offensive violence, to keep the control of the means of production out of the hands of the workers and instead in the hands of the "capitalist".

1. Its not a forcible transfer of wealth, but a returning of control. Worker control of the means of production is based on defensive violence
2. There are many ways to do it, and none are through "the state". The closest is what some define as a "workers' state", which is only brought to power through revolution and is only loosely defined as a state. (Many authoritarians call anarchy a workers state, for example.)