...It's worth noting that in that discussion, it was pointed out that only two companies control more that 51% of the Bitcoin hashrate. An entity controlling these two companies (either through legal/political or clandestine means) could effectively control the Bitcoin network....
Pools are not miners. I am guessing that you are taking about Foundry USA and AntPool
Although they do host some miners that are under their control a lot of the mining hashpower that is coming into them is from independent miners running their own equipment. As soon as it looks like they are doing something funky / non legit people are going to point their miners elsewhere. If they get too big people will point their miners elsewhere. Even going back 10 years ago (crap has it been that long) GHash.io hit over 51% and the community freaked and miners moved off. It was a minor worry then and an even smaller one now.
It doesn't really matter: a government entity could order whichever company to do their bidding, or take them over by clandestine means. In the latter scenario, nobody would even know what was happening until they had complete control of the network.
GHash.io is not Russia, China or the USA. GHash.io does not have a CIA, an FBI or nuclear weapons. Etc. etc.