How did the success of the $64,000 question bear out the truth of the saying that imitation is the sincerest form of flattery

The $64,000 question caused a huge controversy because it is the first known show to ever known to be directly controlling the outcome of the quiz according to the producer's will. They do this in order to drive financial gains to the show.
Seeing the financial success from this show, many shows after this started to imitate the following format, such as the twenty one.

Claim and evidence is the answer