Yea, your numbers aren't right, Magicians had more viewers overall than Mr Robot not including L+3, L+7, and International...even then Mr Robot isn't even USA's most viewed show...Also you do know NBC is the most viewed network amongst 18-49 year old and the second most viewed in total viewers? So while Gotham may be on Fox, people aren't watching it compared to other shows on NBC .
Top 75 TV shows of 2017-18 season | EW.com
USA viewerships:
USA Network TV Show Ratings (updated 12/22/17) - canceled TV shows - TV Series Finale
Mr Robot viewership
Mr Robot TV Show on USA: Ratings (Cancel or Season 4?)
Syfy:
Syfy TV Show Ratings (updated 12/22/17) - canceled TV shows - TV Series Finale
The Magicians Viewership
The Magicians TV show on Syfy: ratings (cancel or season 3?) - canceled TV shows - TV Series Finale
Television: Comcast had 4 of the most watched Television networks (NBC, MSNBC, USA, Telemundo) with 3 in the Top 10 per total viewers and then within the demo of 18-49 which are what makes studios the most money, they also had 4 channels (NBC, Telemundo, USA, Bravo) with 3 in the Top 10. The only channel that is having trouble currently is Universal Kids which say a -30% downward trend in viewership.
Source: Nielsen Via IndieWire
Highest Network Ratings of 2017: Most Watched Winners & Losers | IndieWire
At the same time is Disney building rides/attractions on the Punisher and those netflix shows, is Fox licensing out Archer for theme park attractions, isSix Flags pushing out DC based attractions that are exactly super high quality? Answer: No.