Thanks so much for this. Reading the comments below, and combined with my own memories (I'm now 61) could there have been any doubt which network was #1 in '73?
The song has been reimagined as the new station ID of EBS (Eto Broadcasting System) in the Philippines to celebrate their 30th anniversary which their lineup revisit the golden age of NET Indonesia including Cartoon Network shows and animes like My Hero Academia (after this anime left out PHTV for the third time).
CBS was still sporting a very strong lineup with a mix of veteran shows and newer ones. They were a strong number two; right behind NBC. They’d eventually swap places with ABC several seasons later and land in third place.