"X is political because it is a corporate entity defined in law." is a fully general argument that every company ever "is political", which is the dilution into meaningless I mentioned earlier.

And for all the things you mention, I support making them less political rather than more, and so should you. Finding an example of a politicized aspect of a thing is not an argument that it should become more politicized.

Or optionally, a corporation under capitalism is a political entity with political implications?

Your pick, though, it sure seems meaningless...