You are a Marxist because you want a total order to the universe.
Acknowledging the existence of monopolies doesn't make someone a "Marxist".
Marxists believe that the business cycle can be eliminated. You believe a more perfect money can exist. Same myopia at the highest level of abstraction which is you both don't accept that the universe is composed of partial orders, not totality.
Edit: you also believe in the totality of the elite's "monopoly" control.