I hope they'll stay for good, unlike the ICO which helps to make this market grow bigger but eventually it disappear due to lots of complains from people who got scammed. The De-Fi hype is still here and that is a good thing, but let's see if it will still survive once the market will undergo another long bear run.
With defi projects having such a problem with the gas fee, I think it is going to be a long time until we can see the maximum potential of what they can become, if it goes down under 1 dollar one day, we are going to see defi skyrocket and everyone switching over to DEX as well.