But nevertheless, show me here a mining pool which was not "built months or years ago" that would have a significant share of hashing power...
Or just any new mining pool that would be of relevance, for that matter
You are deflecting. Business model of mining pools and mining farms are very different. Initial investment of a pool is so much lower than mining farms. Pools do not need to sell a large portion of mined coins to replenish initial investment (to break-even) while mining farms do.
It seems that you are distinguishing between mining pools and mining farms. No problem. But in this case the mining farms you are talking about are massively irrelevant to the question discussed, since 1) we (you and me) are talking about miners (not just farms or pools), and 2) they (farms) don't supply even a few percentages of the mined coins (as you separate them from pools). Thereby you volens-nolens confirm that miners (which are mostly pools in terms of new coinage) don't need to sell (a large portion of) their coins (as you said yourself)...
Quod erat demonstrandum