Cool! How much money did you yourself make on this (given that it was entirely obvious, and not leveraging knowledge seems silly)?
Why would you assume the parent would have both a betting addiction and enough side money available to make it worthwhile?
A lot. If you remember all the tariff announcements in the first months of 2025, the stock market tanked and it was an easy buy. The market then reasonably quickly realized many of these tariffs weren't going to persist. The payoff was fast, and the reason you didn't see a massive uptick in the market when the ruling came out was because it was already priced in at that point.
Just because something isn't obvious to you, it doesn't mean it wasn't obvious to a lot of people.