Was watching a 1983 episode of TTD on Blanquepage's YouTube Channel (Sunday Marathon #2) when the following situation came up:
Wink mentioned that as of that time, (at least) one "network-owned" television station was now carrying TTD, and as a result, a new $50,000 cap on cash and prizes was now in effect with anything won over that amount had to be donated to a named charity. However, the contestant could stay on and continue playing for charity (sounded like once defeated, contestant could pick and choose what they want to fill their 50k cap and what remainder goes to charity).
I don't think I have ever heard of a show that started off with an unlimited winnings rule (Thom McKee and other earlier players kept all their $50K + winnings, correct???) only to be capped later due to a network relationship rule because one or more network O&O stations picked up the show and not because of a general rule change by B&E to shorten contestant runs.
Were there other shows that fell into this situation?