So it is quite ok and safe to have big mining companies been ordinary compliant and regulated corporations imho
This statement contradicts the basic idea of bitcoin. Bitcoin is independent of the authorities. If the authorities subjugate him, he will be destroyed.
As much as I like the idea of a completely anarchist Bitcoin, I'm down-to-earth enough to know that won't happen.
The Bitcoin network itself is not prone to regulation, by design, so much is true.
The Participants in the network, namely the miners, exchanges, maybe even ordinary users, definitely are.
But the end of
n participants won't be the end of Bitcoin as long as
n < all.