Grayscale Investments CEO Michael Sonnenshein stands firm in the face of skepticism, defending the Grayscale Bitcoin Trust ETF, GBTC’s 1.5% fee, the highest in the market. Notably, as the U.S. Securities and Exchange Commission (SEC) recently greenlit several Spot Bitcoin ETFs, Sonnenshein boldly predicts that most won’t survive, questioning their long-term commitment to the asset The post Grayscale CEO Challenges Bitcoin ETF Rivals, Lauds 1.5% Fee Amid SEC Approvals appeared first on CoinGape .