This is true, but big winnings come with small steps. Similar, maybe it seems without much importance the fact that El Salvador is the first country deciding that BTC is accepted as legal tender, considering that it's a small country, with severe economic problems. But such a movement may determine other countries to do the same step. Coming back, maybe other countries will also decide to take legal actions against Pi Network. Maybe some Asian countries will follow this example. And then, if multiple Asian countries will start such actions against Pi, then countries from the rest of the world may follow.

I may be wrong, but I believe that the initiatives against One Coin and BitConnect were also taken with small steps. The important part is that authorities did not stop and they pursued these scammers until, eventually, they managed to take down these networks (or, at least, they managed to do it almost entirely).

There were many users vocal against such scams and many topics were launched on various forums, for trying to help those naive enough believing in such scams, but all these were not sufficient. In such cases legal actions taken by authorities are really needed.