Summer of 2020. The DeFi buzzword began to cause mania within the crypto industry. Something that was much needed after the ICO craze and its subsequent meltdown post-2019. However, âDeFi Summerâ as it was later dubbed, was a much larger game changer for the industry than these ICOâs we all had all become accustomed to. This DeFi gold rush was what Vitalik Buterin had always envisioned with his original concept of the Ethereum blockchain, and in 2020 it finally came.