Ethereum crossed $3,000 for the first time since August, following a surprising change in investor sentiment.Investors are optimistic about the growth of Ethereum's DeFi space under the Trump administration as it adopts a collaborative approach.Ethereum DeFi tokens, such as Aave and Ethena, have also seen significant rallies in the past two days.Investor interest in Ethereum spot ETFs is surging, with net inflows recorded for three consecutive days.