> voluntary business transactions
The evil parts are hid in property rights which are not voluntary.
> made to never grow too big, in order to avoid impacting very many people
Consolidated property rights have more power against their counterparties, that's why businesses love merging so much.
Look at your tax return. Do you make more money from what you do or what you own? If you make money from what you do, you're a counterparty and you should probably want to tap the brakes on the party.
What are the evil parts, exactly? When property can't be privately owned with strong rights the effectively the government owns everything. That inevitably leads to poverty, often followed by famine and/or genocide.