Tours Vuelta A Francia En Vivo -

An interesting paper related to your query is published in Economic and Business History (2022).

The paper identifies three distinct phases of broadcasting: a local French phase (1948–1967), a European expansion phase (1968–1991), and the current global high-quality phase (1992–2021). Tours Vuelta a Francia en Vivo

This research is highly relevant to your interest in live tours ("en vivo") because it analyzes how the Tour de France evolved from a small French experiment in 1948 to the high-definition global product it is today. An interesting paper related to your query is

It tracks the shift from delayed print-dominated coverage to sophisticated live broadcasting techniques—including the use of helicopters and motorbikes—that changed how audiences perceive the race. Other Notable Studies: It tracks the shift from delayed print-dominated coverage

As the live product improved, the value of TV broadcasting rights skyrocketed, allowing the organizers (ASO) to become the sport's most powerful actors.