Coinbase's current valuation is unjustified due to 2 fundamental risks: the hostility of the US regulatory landscape towards centralized exchanges, and the widening gap in a winner-takes-all market.With coin listings being one of the core competitive advantages of an exchange, Coinbase has the 2nd smallest coin listings among the top 10 exchanges as a result of regulations.Widening gap between Coinbase (ranked 2nd) and Binance (ranked 1st) in terms of coin listings and trading volume is evidence of a winner-takes-all market, Coinbase is on the losing side.Marginal revenue growth, decline in profitability, and decline in the overall growth stock valuations further plague Coinbase's investment value proposition.