The mining difficulty in the Bitcoin network is starting to drop.
The first fall was recorded already in October.
However, in November the declines are significantly higher.
https://www.coinwarz.com/difficulty-charts/bitcoin-difficulty-chart
The difficulties with mining in the Ethereum network are also falling.
However, the decline has been occurring for a long time.
However, November drops are also much higher.
https://www.coinwarz.com/difficulty-charts/ethereum-difficulty-chart
What is the limit of the profitability of mining?
To a large extent it depends on the price of electricity.
Despite everything, the decreasing difficulty will attract miners.