Curious how you define “top 4 biggest media networks.” If you mean the traditional big 4 US networks (NBC, ABC, CBS and Fox) they’re mostly part of pretty large

Curious how you define “top 4 biggest media networks.” If you mean the traditional big 4 US networks (NBC, ABC, CBS and Fox) they’re mostly part of pretty large media conglomerates (i.e Disney, Comcast, Viacom) that are each smaller than FB by market cap, but by less than 1 order of magnitude.