The good news is that the network distribution is well balanced.


Weeeelll, yes, all the top 4 companies would have to collude in order to launch a 51% attack (e.g. to take 100% of the rewards, by ignoring blocks mined by other miners and thus orphaning them).

People that adopt BTC as a trading platform should understand that many Bitcoin participants from all over the world with great minds are working on the tech satisfy ego, rather then the speculative opportunities.
It's a big flaw of bitcoin's design.
It doesn't matter if "there is no incentive" (although I have doubts about that), you cannot allow something like this to theoretically happen IMHO.
Mining centralisation is just another big problem with bitcoin and his POW, by design.
Listen hardware costs operating costs and, network difficulty and how it finds its balance on the network has not changed in 5 years.
CPU / GPU / FPGA / ASIC..
What makes this network the bitcoin network rule over all the other crypto networks is the network participants.
Even if the "BAD" actor gains traction. It will be short lived.