The passage of time has not been kind to the economic arguments underlying the Paramount decision. Kenney and Klein (1983) and Hanssen (2000) provide efficiency rationales for block booking. De Vany and Eckert (1991) and Orbach and Einav (2007) discuss how minimum ticket prices reduced monitoring costs. De Vany and Eckert (1991) argue that the system of runs, clearances, and zoning served to provide low-cost access to large numbers of filmgoers.
Granted, these and other studies resulting from the decision greatly enhanced our understanding of when vertical foreclosure might harm consumers. However, I am not sure this somewhat esoteric knowledge has been worth 70 years of inefficiency, lost consumer surplus, and diminished producer profit.