Thanks for these numbers. I see a lot of "get rich fast" posts/questions from new members to this forum lately in which they think it is possible to find private keys to well funded addresses by bruteforcing. I think most of these questions arise when people just don't have a grasp about the near infinite candidates. So I'm probably gonna use your number example as reply in the future to point out there's a difference between "theoretical possible" and "practictal feasible".
Even if you happen to be the VERY lucky one to get a "well funded" address through private key generating or bruteforcing, stealing not the morally best thing you can do - if someone found yours, you wouldn't like all your funds to be scrapped off your accounts either, would you..
It's an interesting research but at the end of the day, finding a used private key does not make it yours. You only get control of it, but that doesn't mean you can claim the money because that's literally theft.