As the other response is somewhat condescending — and as the usual utility of money calculation is log($), your example numbers would normally suggest the second difference is greater than the first — I think you may find it more useful to ask yourself what you can do with 10B that you can’t do with 1M.

Sure, there are plenty of nice big houses that cost more than 1M, but you’re not off by much, and the first million makes a massive difference, including being able to talk to the bank rather than being escorted out by security.

But: anything over about 100M, the only difference the number makes is which company you get to own because that’s the only[0] thing people sell at that price… and at that level you get the money as a way to keep track of the score of how well you’re running them.

[0] OK, sure, private islands, and I don’t know how yachts work in law, but you get my drift

Yes, that is the naive take on the utility of money that I was talking about.

By your logic Sergey Brin is closer to the homeless man you step over on the street than he is to Elon Musk. Which would be a silly thing to say.