This strategy of entering at the right moment doesn't have to do with only DeFi project as to profit from the altcoin industry entirely you must predict the early stages of a potential project to join and secure profits when the opportunity present itself. Altcoins aren't there to serve as very long teem investment as the possibilities of them getting replace by better version is there as we're currently experiencing with DeFi project.

Investing in DeFi totally depends on what you view the technology to be though, if you consider it to be some avenue to make quick money since that's what the media are showcasing then you can go for the quick pump and dump but be very careful though to avoid getting disappointed and lose all you have.