There’s already a lot of us in support of socialist ideas where one of the biggest criticisms is for a planned economy
Planned economies are good actually, there is a reason semi-feudal russia was able to go to space in 40 years after the revolution, while beating off imperial superpowers like Germany and Britain.
Was Lenin aware of cooperatives when he wrote the state and revolution? Its not a theoretical idea.
Yes lol: https://www.marxists.org/reference/archive/kropotkin-peter/1917/a-meeting.html
There can be no such thing as peaceful revolution, if your political movement is getting anywhere the bourgeoisie will send their dogs to destroy it, and it will be violent. You must only look to history to see how easily the mask of civility slips away and the inhuman, bloodthirsty face of capital is revealed.
So basically the state exists in order to defend capitalism from internal and external threats, and a cooperative movement growing too big is a threat that it is going to respond to violently. Hell, union struggles led to literal battles and aerial bombings, and they only wanted better conditions working for the capitalists.