they will slowly come to 0 value.
there are nearly 2000 coins in market today. nearly 1750 of them will get 0 value in 3 years. dont waste your money in altcoins.
They will never be in zero value, devs are still looking at the value, with the bear market, most devs did not pursue on aggressive marketing.
I believe they relax and this time but could probably start to be active when seeing people are again ready to invest.
Relaxing and waiting for Bitcoin to do their job for them ?
How will they even encourage more investors if the project they get themselves involved with does not have much activities, project without activities no matter how low the market price is will definitely fail. I dont think majority of them even believe so much in the power of their projects because if they do, they will work had and not just wait for investors to suddenly jump from the sky and commit their money in a redundant project