This could become the start of another huge bubble. Since 2016 (the last Bitcoin halving), Ethereum has had more positive exposure to the mainstream. The public is more educated on its usefulness and potential. It's become more legitimate. The bitcoin halving is going to have a tremendous effect on ETH and other altcoins. But the 2020 halving will significantly decrease the profitability of BTC mining. Alternatives will be in high demand especially those utilizing Proof-of-stake (POS). Ethereum is a front-runner.