Companies are simply a tool that helps a group of people to make a profit. If you remove the group of people then what would be the point?
In some contexts we have nearly removed all the people in this equation already. 85 people own as much as about half the world's population [1]. So, capitalism in the form we have it today, which includes companies, are simply a way to concentrate wealth among the few. Some of these few use the money IMO vicely, but a more equitable system would probably work better. I say this after having lived and worked in the US…
Global inequality is actually declining, by the way, so can't modern capitalism get some credit for that?
http://www.maxroser.com/economic-world-history-in-one-chart/
https://www.gc.cuny.edu/CUNY_GC/media/CUNY-Graduate-Center/P...