not all miners can hold what they mined...we see miners sell because they are miners...
every miner the mining is his job, he can't hold the coins he must selle what he min for pay Electricité and repair the hardware and the rest  He distracts him from his family..
Conversely, the community is the one who does up the price.. because the investors who can hold there coins because this is there job.
and me et other buy from miners the coins who mined we give them a good price for to stop any  dump he can the miners they cause when launched the trading because they need money for reasons Like what I said earlier.
i know ه gave them a price they would not be able to sell when open trading because all want sell dbix. but i am investor i can do hold my coin for long time.