It was certainly very iconic in the Netherlands (coincidentally I just gave a lecture about it this week, based on [1]), but it has aired in a number of other countries as well, such as the US and France. I think the former even is the original [2].
Shouldn't be too strange that people might want to play a game themself instead of watch other people play a game they never knew of on TV in Dutch.
There are probably a lot of good games out there that could be thoughtfully ported so that people can play. But you'll find that a naive clone by itself doesn't guarantee success.
Game concepts generally can't be copyrighted, in the US at least.
From Wikipedia [1]:
> gameplay elements of a video game are generally ineligible for copyright