Corporations (..) usually run pretty much as a sort of a communistic hierarchy
Wtf are you on about?? Typical corporate government is very much a feudal system where a few lieges receive the vast majority of the wealth produced by the workers. That's exactly the opposite of the aims of communism, exactly what communists rebelled against.
decision-making is hierarchical and centralized
Again, that's feudalism, not communism.
resources of all kinds are pooled
If by "pooled", you mean that the work of the many pays for the pools of the few, then sure.
uniformity in behavior and looks is encouraged
Which is a feature of conservatism and authoritarianism in general, including but not limited to conservative communism, fascism and paleoconservatism.
internal and external propaganda is strong
Again a feature of authoritarianism, demagoguery and tribalism, not specifically communism.
internal competition is discouraged
My ass it is! Corporations encourage internal competition in myriad ways, such as leader boards, employees of the month, competitions with some paltry prize for the workers who excel in some metric or the other compared to their peers, performance based promotions etc etc.
Internal competition is how corporations keep workers from banding together against their liege lords and ladies, so they encourage it at every opportunity.
most of the benefits of the work, i.e. money, goes to the top.
Again, the opposite of the intention of communism. I know that some nominally communist countries such as the USSR and China are actually one-party oligarchies, but they're examples of bad and dishonest leaders governing in ways contrary to the ideologies they pretend to believe in.
So yeah, countries definitely aren't corporations, but you clearly have bizarre misconceptions about both corporations and communism.
