Sort:  

Hivers in common just dump too much of their earnings on the market. They are entitled to do that, but they are destructive their hive income this way.
What is the English phrase: they biting in the hand that feeds them.

While that is not the only cause if the steep downfall, it is just one of the many reasons.

If you are on a site that pays people then you should not be surprised if some actually use that income. I know many really need it, but I am fortunate not to. I see other advantages to Hive, but I may well spend more if and when the price goes up.