Cory Doctorow's book Enshittification introduced me to the term Technofeudalism. Wikipedia describes it as "a modern economic system where big technology companies have power similar to feudal lords in the past. Instead of land, these companies control digital platforms, data, and online markets. People and smaller businesses rely on these platforms, just like peasants once relied on feudal lords for land and protection." Yanis Varoufakis wrote a book on it, Technofeudalism: What Killed Capitalism.