You can’t “incorporate” with capitalism “elements” that are necessarily immanent to it, that constitute an aspect of what capitalism is. State regulation, ownership is not some other to capitalism. Capitalism cannot be what it is without these elements (ex. capitalism requires contract law and the protection of private property rights, which requires a state, state-operated courts and police forces, whose existence cannot be subject to market forces as with private companies). This is not capitalism taking elements from socialism.