You're mixing up years and days there. It would be about $1 a day, not 400.
"Jeff Bezos has 300 billion dollars. There are 300 million people in America, so he could give everybody a million dollars."
For fun, calculate how long the billionaires of America could fund America's social programs if they were taxed at 100%. If you ask people this, the off-the-cusp estimates are usually something like a thousand years, a century, some huge number like that...
Of course that assumes you think Earth's and society's (or at least the US's and Americans') resources should exist for all humans (or Americans) and the ideal balance would be based on as little as one needs and as much as one can contribute, i.e. literally how early human communities operated and how human communities still often operate outside economical contexts (e.g. after a natural disaster). You can say that model doesn't scale but I don't see a good argument for why that should be a reason to use a completely different model unless you're literally among the few people it disproportionately benefits (if you ignore how ruinous it usually is to them too at a human and interpersonal level because of how much it alienates them from almost anyone else around them).
As a Brit I think I’ve derived significantly more than $1000 in value through Amazon’s existence as compared with the status quo beforehand, and that’s exclusively counting the shopping part and not anything else they do. You can ask the question about whether it would have happened anyway in a communist paradise or whether Bezos gets the correct percentage of the reward but I mean, it actually is a very useful thing.
Similarly with Apple and Google and so on. These companies make things that people for the most part choose to use.
Capitalism is not a zero sum game, and people can choose to turn effort into wealth or they can choose to sit around and do nothing.
It's usually based on nothing other than pure vibes.
It could theoretically be true if e.g. some billionaire just decided to buy up a load of houses and leave them empty just to piss people off, but whilst theoretically they probably could do this (e.g. if I back of the envelope it, Elon actually has enough net worth to offer everyone in my hometown double the market value of their house and then just leave them to rot without even renting them out), no-one actually does.
Even in this populist age, math still counts.