Businesses that were too successful are also called monopolies
No. There is no inherent relationship between the two things. A business can absolutely be very successful while there is competition, simply by being the best 'competitor' in the eyes of the customers.
the ratio matters a lot. It's the difference between "we're all in this together" and "some of you won't make it but it's a sacrifice I'm willing to make".
The vast majority of people don't know or care how much the person at the top is making, at all. They care only about if they're in good shape themselves. Someone who's making $100/hour and is living comfortably is, in 99% of cases not going to really give a shit if the CEO is making 50x what they are, or 500x.
That's the reality.
This is just a naive assumption.
The statement that a single billionaire's wealth can not only solve world hunger, but do it so easily as to compare it to a snap of the fingers, is frankly, comically absurd, and exposes not only a massive ignorance of the root causes of the starvation that is still occurring in the modern day, but even for those issues which CAN be solved with an injection of funds, a massive ignorance of just how MUCH funding it would take.
As one tiny example, the US, a single country, spends over 1 TRILLION on welfare, not once or in total, but annually. And a mere FOUR percent of Earth's population lives there.
Even the wealthiest human being on the planet's net worth is nothing compared to what it would take to solve even the small minority of issues cold hard cash can solve. You have no sense of perspective and scale on this.