It's companies at the scale of governments - which is a distortion of capitalism.
I agree with what you said also, to a certain extent. But then we go down the path of: is there anyone with enforced antitrust on their manifesto? Considering the overwhelming lobby influence of 'government scale companies', will there ever be? I'll suggest: no.
I personally don’t believe this is a distortion of capitalism as much as it is just a later stage of capitalism’s inevitable self destruction.
On the latter point, perhaps you're right. The key is whether it's inevitable or not. I don't profess to know.
Some are more prone to human flaws than others, but the real issue is almost always how greed has found ways to circumvent the methods in place to not allow these mutations to occur.
As always, take "pure" ideas with huge amounts of salt.
Markets are an important force of progress, capitalism is feudalism all over again.
There is no real negotiation going on between employer and employees. If you don't believe me, ask any HR person whether they allow custom contracts.
It's intrinsic in capitalism that firms often increase in value as they fire works.
Your values determine whether that's a feature of a flaw though.