we know bitmain did most of the mining,
no, this is what you think and you are wrong. bitcoin doesn't have "most" of the hashrate to be doing "most" of mining. they have a small percentage of it.
and their pools accumulated most of the btc,
a mining pool is a way for miners from
different places around the world to "pool" the work and
share the block reward the pool itself only gets a fee to cover their costs.
and for every antminer (s-9,...) they sold the west, they kept 9 for themselves to mine during low difficulty, not selling machines until the difficulty was high, taking advantage of cheaper power than the west ( pre-2018 )
you are again only saying your personal opinion here.
So given that BITMAIN(CHINA) accumulated say +80% of all BTC to date post 2013, did they sell it or did they HODL?
first prove the first statement then ask a question about it!
What you think?
considering your post history and this topic I think you are new to creating FUD and think topics like this can be categorized as an FUD. if you like I can explain what a good and effective FUD looks like...