What would happen if all miners in the world refused to sell BTC at the same time for a month? (Reddit Bitcoin)

Let’s say every single miner in the world is in a group chat and they all together refuse to sell for the entire month of February, even if it means losing money for them. They will still keep mining though.

What would happen to the price of BTC? Isn’t this the easiest way to quickly and artificially push it to 100,000$? And after that they can sell at a much bigger profit.

Overall isn’t such a coordinated and mass action beneficial for the miners, for us and for the BTC price?