I am very well read and fully comprehend the subject matter being discussed. Socialism and Communism operate on exactly the same principle, only the degree of force utilized in the pursuit of that principle separates them and it is that use of force that is BANNED under Capitalism. Perhaps you need an analogy to understand what I mean by "degree"....
A light bulb is either ON or it is OFF, there is no third option.
Hook up a dimmer switch to the light bulb and you can control the brightness (force) of the bulb but it does not change the fact that the light will either be ON or it will be OFF (either force is being used or it is not). Now, that light represents government interference into the economy, the brighter it is, the greater the force that is being used.
So long as the light is OFF, the Free Market and Capitalism exist. If the light is turned ON, even to the lowest possible setting, Capitalism ceases to exist, the Free Market no longer exists. Why do they no longer exist? Because volitional consent has been abolished and replaced by force. Now, if you crank the light to it's maximum brightness, you have Communism, a totalitarian level of force.
I hope that helps you to understand.
The Free Market is the economic system of Capitalism. Once there is even one single government intrusion into the economy, it is no longer a Free Market, it is no longer a "Capitalist" economy... It is now a Mixed Market economy that has, to some degree or another, abolished volitional consent and replaced it with the use of force.
"Just as the notion that “Anything I do is right because I chose to do it,” is not a moral principle, but a negation of morality—so the notion that “Anything society does is right because society chose to do it,” is not a moral principle, but a negation of moral principles and the banishment of morality from social issues." - Ayn Rand, The Virtue of Selfishness
Do you consider any nation that allows some degree of private property to be using the "capitalist model"? That's a serious question, I would like to know exactly what you perceive the "capitalist model" to be. What is it you believe determines whether the economic model is "capitalist" or not?