For newer cryptocurrencies you often buy them and then either (1) stake them (earn rewards for contributing to network security) or (2) deposit them in a crypto

For newer cryptocurrencies you often buy them and then either (1) stake them (earn rewards for contributing to network security) or (2) deposit them in a crypto-bank like Aave and earn yield from having your money loaned out. Increasingly people don't look to cash out to USD but rather stay within the crypto ecosystem. I do think that BTC and its clones engender a certain dragon-cache hoarding mentality that aligns with either plans to eventually cash out at a higher price or some kind of apocalyptic vision where eventually USD is no longer used at all.