NO. You seem to mistakenly confuse mining with the exchange market.
When someone has developed a more efficient way to mine, THE DIFFICULTY WILL RISE.
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LOL NO. When someone has developed QUANTUM technology based ASICS they can MINE Bitcoin @ down to 1$ per Bitcoin and still make profit which means for a coverment especially they will want to push BTC price as down as possible for people to loose faith in it HELL THEY WILL EVEN STILL SELL ALL BTC WHEN they take loss just to make a point.
They can CRASH BTC down to it's roots. PEOPLE YOU GOTTA WAKE UP FKS you can't be this dump something needs to be done.
Just so you know. If the government or anyone actually created a working Quantum computer,
which would then be convertible into smaller chips, to eventually create Quantum ASICs,
then the game is over for everyone, world wide, for everything.
If Quantum Computers are developed and deployed, nothing is safe, not encryption, not physics, not anything.
It would be a new stage of human evolution. We would be able to do anything that we could imagine.
We would get computational answers from other realms.
We could figure out time travel, go to other dimensions, anything (possibly).
I don't think people will want to tank Bitcoin/bitcoin, when the whole world will be undone.