Why mine Ethereum when you could buy it for $ 100-200?
For example, I bought equipment if its payback was about 8-10 months, or maximum 12 months.
I don't think that many miners bought equipment in 2019, when the profit was from zero to several tens of cents.
Many miners had negative profit and turned off their farms. Check out the hashrate history.
It's funny, these new people starting to mine now think we are lying hehe, they have no idea what bear market really is. I have a theory as what they think, if they earn 7 usd dollar now, they think they will earn 3 dollars in bear market ehhe, no sheeps, you will not earn anything, you will pay to mine, only big farms with around $0.02kwh electricity power costs will be mining, anybody with $0.10 kwh electricity cost will pay to mine.
Nothing will change in mining for many years to come, because this is a new business. Those who lost money on investments in mining are in no hurry to invest there, and beginners think that their equipment will work 24 hours a day without breakdowns and failures.
I do not want to give advice because it is useless.