43 million users yet the narrative is cryptocurrency is still in its 'infancy.' I wouldn't be surprised if at least 10% of all Americans have dabbled in buying crypto.
Well Coinbase marketshare of crypto buying is small (like 3% volume of bitcoin) so unless you believe every person on the planet will wind up trading crypto, it really isn't.
Given what users Bitcoin and Ethereum appeal to (those that don't mine high fees), no.