Earlier quoted context omitted.
They “delivered” only because they sold wheelbarrows to the 49ers. As gold rush history will tell you, most fortunes were made by merchants not miners. Name a non-ICO-infrastructure ICO that isn’t a scam.
Ethereum as infrastructure is also a dicey proposition. It works, slowly, but it doesn’t seem like there’s a lot of demand for “dapps” outside ICO tokens, gambling, and the odd Ponzi scheme. The smart contract revolution at this point is complete vapor ware.
Loans - Compound Finance, Dharma
Derivatives - Augur, Veil, Synthetix
Exchange - 0x, Kyber
AMM model "exchange" (always liquid markets) - Bancor and UniSwap.
And at the center of all of this is Maker and it's Dai stablecoin which is backed by Ethereum.