When playing StarCraft 1. At a high level, the Protoss is the hardest to play because you need to be aggressive when playing against Terran, and defensive when playing against Zerg. But it's difficult for one person to be both aggressive and defensive.

When playing with coins, you need to be aggressive with altcoins and defensive with Bitcoin, so very few people can play both well. There are not many people who become wealthy by accumulating a large amount of Bitcoin through trading altcoins. Of course, coin-issuing groups are an exception, such as the EOS group, which issued EOS specifically to accumulate Bitcoin, with a clear purpose.