Taxation issue is not an important factor at all. You should always remember the cryptomarket is a highly speculative market that is easy to manipulate by superwhales (institutional investors and large-scale retail traders) in the absence of a proper regulation. All that price volatility is of purely manipulative nature.
With the market fairly spread out internationally now, and liquidity and volume also fairly decent, in what way would you consider it easy to manipulate? I'm saying you're wrong, but I'm curious about what methods you believe are being used? It would probably take some kind of collusion, no?