On the flip side, it may be fair to say global stock markets are in some ways, toddlers in comparison to crypto.
Brokers in the united states used to charge upwards of $7+ per trades on the purchase and selling of stocks. Buying and selling stocks often costed more than $15 total in commission fees alone. Crypto exchanges pioneered low commission costs on trades which have become the industry wide standard for stock brokers today.
Today we see many banks and financial networks adopting blockchains. Shifting towards a paradigm more closely resembling the trust-less design bitcoin is known for popularizing around the world.
You're 100% correct about crypto representing a tiny proportion of global market cap. It may be acknowledged that virtually all of the revolutionary and progressive ideas and technology currently advancing finance, merchant and banking industries were developed within the crypto sphere however.
Food for thought~