If the ETH price declines here's what will happen: People will buy the shit out of it lol
People also solds once they see that their coin was dropping so why would they buy it again ? Makes no sense to me but it's reasonable to buy at lows when you still didn't sell any of your coins at a loss .
Nothing happens op because first of all . The decline has a limitation . It can't just decline forever but declines can be a good and bad depending on the persons view .
We already witnessed ETH lowest low already, around $80 and after that it should bounce back and it's 2x from the last lowest price so I guess the bleeding has stop already and I don't see it going down further.
In fact, with their ETH 2.0 release just months for now (although technically it will be next year), there is a possibility that the price could be impacted positively, we are talking about in the range of $300-$500 at least, just saying.