Are other countries like the West where 'markets' (equities, derivatives, prediction) have a wide ranging pervasive effect on culture?
The Indian derivatives market is huge . Lots of people gambling there.
That is what Jane Street (IIRC) was accused of. Some of its traders then went to another hedge fund and did the same trick there, reducing Jane Street's profit, and ended up being sued by Jane Street. (BTW, Jane Street claims it was not manipulation, but basis trade arbitrage.)
Of course, 9 out of 10 gambler end up in the red.