Both sides are doing that. There's probably more Marvel Cartoons on tv than DC.
None of them are as big as Teen Titans Go! I don't think though.
Look at Cartoon Network in the morning:
Teen Titans Go! is on at
7:00AM, 8:00AM, 8:30AM Meaning right before the kids go to school.
12:30PM - For the kids too young to go to school or getting homeschooled.
3:00PM, 4:30PM, 6:00PM, 6:30PM - When kids get back from school, the best time to strike.
Children probably have a sum of 8 hours of free time during the day: 1 hour to get ready in the morning, 6-7 hours at home after school.
3.5 hours of that time is Teen Titans Go! on Cartoon Network and the ratings are doing numbers.
Marvel doesn't have anything like that I'm aware of. Sure they have cartoons you can find on the internet/Netflix, DC does as well, but where it matters: on mainstream TV during prime time, Teen Titans Go! is running everything out of town.
According to Hope King a tech reporter for CNN Money,
[10]Teen Titans Go! was one out of three of the most viewed TV shows and other media to contribute to a record setting 1.3 million simultaneous Xfinity On-Demand viewings during the
January 2016 United States blizzard (a.k.a Winter Storm Jonas).
I have little nieces and nephews as well as hearing random kids singing the 'Waffles' song. This is a real big, major show.