Yeah but Coinbase has trend behind them. Who cares about others when nobody talks? Nikola as an ENTIRELY fake company made it to billions of valuation and stayed there for months while everyone could easily prove it! with help of media too! So when valuing big companies just with revenue and calculations is bit wrong and misses trends and such, especially recently. This market is irrational and bit of scam too.
Coinbase's market cap is going to be higher than both exchanges combined - while doing a fifth of the revenue.