According to Fuchs (2016), Berger (2019), and Artz (2008):
Capitalism is the process of producing and selling commodities for the reason of profit for and by a group of organizations who decides on the rules of this matter.
Capitalist communication is the communication between the capitalist organizations and the public in which these organizations tries to reach the conscious and unconscious mind of these individuals to achieve the goal of earning profit. An example would be advertising where media presents commodities to its audience in a way that convince them to purchase whatever the advertiser wants them to purchase via methods of every kind despite if some were unethical.
References:
Fuchs, C. (2016). Introduction, read pp. 1-5 only. In Reading Marx In The Information Age: A Media and Communication Studies Perspective on Capital Volume 1. New York: Routledge. Retrieved from: http://fuchs.uti.at/wp-content/uploads/introduction.pdf
Berger, Arthur Asa (2019). Media analysis techniques (read excerpts from Chapter 2 “Marxist Analysis”). Newbury Park: Sage Publications. Retrieved from: https://us.sagepub.com/sites/default/files/upm- binaries/88706_Chapter_2_Marxist_Analysis.pdf
Artz, L. (2008). Media Relations and Media Product: Audience Commodity (read excerpts). Democratic Communiqué, 22(1): 60–74. Retrieved from: http://journals.fcla.edu/demcom/article/view/76591