The math in mining changes every day.
With an Ethereum price of $ 1,000, you have a profit of 60 cents, but you can sell coins when the price approaches ATH.And your profit will be 5 times more.
The math absolutely does change, but my point is that since I thought video card prices were too high in proportion to the profit, I decided to sell half my video cards. I will sit on the cash, then when GPUs are cheaper, use the cash to buy more cards than I sold.