On the flip side, it may be fair to say global stock markets are 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. Crypto exchanges pioneered low commission costs on trades which have become the industry wide standard for stock brokers today.

Today we see many banks adopting blockchains shifting financial networks towards a paradigm more closely resembling the trust-less design bitcoin is known for introducing to 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.