Many people told me that, if a mining pool performs a 51% attack, the price of the coin will drop.
But I disagree.
There are pools with >50% hash power already for a long time. Flypool is an example. (On the ZCASH network)
If one day these pools start to mine only on their own blocks, but not double spending or refusing any transactions, they performed a 51% attack. However, I think the security risks didn't become higher.
Yes, they can revert a transaction at any time so it is a security risk, but they already have had this ability for months!
For these two situations:
- there is a pool with >50% hashrate
- this pool mines only on their own blocks
I think the second is not more dangerous than the first one.
So my question is, is it becoming more dangerous when a pool with >50% hashrate starts to mine only on their own blocks? Will the coin price drop and why? Why didn't pools like Flypool mine only on their own blocks?