Besides, democratic corporations exist too. They are just incredibly rare.
I've never known of one.
Software consultancies is one of the markets where democratic consultancies were common enough for one to see them.
But now the world is property of a handful of corporations, so you won't see any contemporary example.
The most despotic and scary governments of history would probably like a word with you. Maintaining a believable pretense of following any rules is a luxury we take for granted in many countries today, but Mao and Stalin didn't worry about the appearance of propriety.
Not really arguing against your main point though, I think you're right. Just don't forget how bad totalitarian governments can be.
Yes, in those instances nothing is worse than the government, but a majority of the world doesn't live in those places. For most people, it's the tyranny of corporations that affect our lives in outsized ways.
No, for most people it's corporations that enable our current best-in-history lifestyle. The hardest things we face are scarcities created by government policy.
It's a common thing in American history where the US government invests in ideas/concepts that are seen as losers by the for profit industry only for those industries to swoop in and profit off the results...
Stuff like that and the American national standards institute is why the USA was in the front of the technological evolution for so long. We spent money on "useless" crap that ended up paying massive dividends later and allowed for the USA to set the standards.
Corps are entirely different. They push harder and harder and harder for PROFITS and will inevitably cross lines. When crossing those lines not only has no meaningful penalty, but actually turns a profit, after the fines are subtracted, they will not only continue to do it, but push even harder. After all, there's no real consequences, so why worry?