This news seems to illustrate the path taken by the bitcoin mining sector, which has become highly professionalized. While it was still possible a few years ago to harvest Bitcoins using a simple laptop, we now witness the emergence of large pools, which clash on the Bitcoin network.
It must be said that the "difficulty of mining", which measures the degree of difficulty related to obtaining a reward of mining, has considerably increased since the beginning of Bitcoin, in January 2009: