Just like ICO, proof of stake,masternode, IEO and DEFi. The trend will come and go but few survive the jungle. The recent spike in price and are all sold off with - 50% and still counting as bitcoin plunge continues.
Sushi developer left the project but I was surprised how the price bounce back when FTX founder renowned his self to continue the project. Invest wisely, most of this project will cost you nothing but loss.

I wonder you are talking about being choosy and selective when deciding to invest because not all defi projects are fake or scam because of the open ecosystem and also defi has big role to plwy in future financial sector. Yes you are right that only small percentage of projects will dominate while others will struggle or fade away.