In the rare case where for some compliance reason they must have a more direct link to the asset, they’ll transfer the item to a holding entity (in which they have indirect but controlling interest) and then lease it back.
If the unthinkable occurs and a very wealthy person commits to actually buying something directly themselves by mistake, they (or rather, their staff) will demand delivery before payment and then either stiff you on the bill or pay at most 70% of it, six to eighteen months later.
These are practices established centuries ago by the British aristocracy and remain alive today.
(there are of course exceptions to this, there are rich people bad with money or who want to look like they're richer than they actually are, but in general rich people stay rich by being smart about their money)
Some of the cheapest people I know are wealthy. Cheap as in, they negotiate the hardest for the lowest price, even though it is meaningless to them. I have been told out right on more than one occasion that it's not about trying to make something affordable, but more of the shear enjoyment of making someone else take less just because they can.
They indeed tend to not by thinks on rates, so not to much "uplift" in your scores.
People which are wealthy tend to also try to get higher credits (for it to be worth it) and buy more expensive thinks so if they messup it's often much more expensive for banks.
Not all people can handle money so there are a bunch of people which will never stay wealthy. Combined with the point above => higher rise.
Some care less for penalties when paying late and might "optimize" payments in ways which are not always mean on time/good for the score.
Lastly there are a bunch of wealthy people which optimized there business so that they only earn as much money as they need. They can always increase it but the banks can't trust this so the only see a person which might have problems paying back. (Note that not all of this people do illegal or unmoralic practices, some just only work as much as they need and not any bit more).
Lastly there is a simple question:
What does it mean if a rich/wealthy person _needs_ a credit?
(Btw. it's a different matter if it's not a private credit but for a company.)