Kim Stanley Robinson is very much in favour of certain kinds of company (e.g. Praxis in the Mars trilogy), while being against traditional corporatism. There's the Business, in the Iain (no M) Banks novel of that title. Kage Baker's Dr Zeus Company is looking pretty malevolent, yes. Do not forget about the Solar Spice and Liquors Company (and the rest of the Polesotechnic League) in Poul Anderson's Polesotechnic League series.