I don't know of any "white" countries living under anything other than capitalism that would lead me to believe they would implement that here in the event of a revolution.
The same people that are putting out the message to "blame Black people for your lot in life" have been lambasting communism and socialism. That is a lot of programming to overcome. When people are used to looking out primarily for "self," they lose respect for and confidence in the capabilities of their fellow man/worker. Furthermore, we are heavily dependent on the international community. It would be very difficult for America to be anything other than Capitalist in a sea of Capitalism. You have more confidence in the stamina and intelligence of poor whites than I do.