Who has long been engaged in mining, he has probably already returned the invested funds into equipment. It's a pity for new miners who bought equipment before the collapse of the market.
You do not need to worry about them. They can switch to different coins. In part, they will be able to return their investment in equipment. By selling their equipment, they can return some more money. In the end, they will return when prices increase significantly. And it will be their time.
Let us hope that in the near future we will see a growth in the cryptocurrency market and we will be able to continue to receive income in its open spaces.