BTC mining can still be profitable, depending on many factors about the cost of energy and equipment you already have. Returns are far better where the electricity is cheaper. Averagely, these cheap countries in Asia has an average profit of around $20 per day for 1 TH/s, but that varies.
Where did you copy this paragraph?
First, if you would get a PROFIT of $20 per TH/S, it would mean an S21 would be making $4000 a day, while it can be bought for $6000?
Why are they not sold out?
REVENUE per th/s is 4 cents a day!
Also:
Moreover, the Bitcoin halving next year might cut the block reward in half.
Seriously?
Bitcoin mining hasnt been profitable for most retail people for the past decade pretty much.
Past decade? Bitmain launched its first product 11 years ago, and plenty of hobby miners kept mining en masse well after the last bull run in 2022 when revenues were still pretty high.