I'm sympathetic to your bias. I've wondered about whether restricting the size of a company would be enough. We deliberately create institutions with what many people would consider an immoral foundation: profit is the highest virtue, socialize all risks, privatize and extract as much value as possible, stretch the boundaries of the law, and constantly try to change the law to tilt things in your favor, and employees are required to adopt these values or leave. Even the smallest companies contain the seeds of a giant monster.

However, having said all that, I do realize that small companies tend to not demonstrate the worst tendencies of large corporations. I assume it's because small companies are basically individual efforts, and most individuals are decent moral people. Therefore the small company reflects that. On top of that, small companies have fewer resources to cause damage. In a large corporation, the nasty nature of the corporate machine is revealed, and individual efforts cannot contain it. Corporations are just machines made of people. The machine does what it is designed to do. Let's change the design!