Primarily because the bitcoin codebase got taken over by some bad actors. However, if ETH takes over in market share, BTC can either improve or become irreleva

Primarily because the bitcoin codebase got taken over by some bad actors. However, if ETH takes over in market share, BTC can either improve or become irrelevant. The people controlling bitcoin may be dumb, but they aren't dumb enough to let something else take over without a fight.