You're right of course, but I view corporatism as a particular brand of socialism. Socialism of-the-right, National Socialism, Conservative Socialism, all would accurately describe it, though perhaps coporatism or fascism would do it more succinctly.
As for the private ownership of land thing - I view the Georgists as having the best argument against unbridled capitalism, and as far as I can see the back-and-forth with them is still ongoing, but I'm afraid I do fall on the private property in land side of the fence.