[Hybrid]

Physical gameshows aren't cheap either.  Somebody has to design and build a set, somebody has to play test the entire format and somebody has to find the contestants.  Even if you just built a game format around dodgem cars on a fairground somewhere, you'll still have to pay to rent that attraction, after all they are private companies at the end of the day...

I wonder if they ever planned a kids version on ninja warrior. They have those waterparks and indoor theme activities and they are about to show the American kids version. They at least would have had the set. Also a kids version of I'm a celebrity set in the welsh castle, they could go nuts with slime and have less elaborate trials.

A lot of ITV's primetime entertainment could be re-formatted for kids. The Chase, Saturday Night Takeaway, one of the numerous Harry Hill panel shows, Tipping Point... hell, I'm pretty certain The Voice Kids and Ninja Warrior UK actually did air on CITV for their first few series.