I don’t see how you can compare one (a business use) to another (a flashy mansion). The Rabbonim have long forewarned us against a flashy lifestyle.
I may be too ignorant to understand this properly, but I believe it *could* be argued that he could have flown on a regular plane rather than having a private jet.
The Wolf
(Note: I’m not arguing that he shouldn’t have had a private jet. I don’t know what his circumstances were and, even if I did, I’m probably too stupid to know if it was justified or not. I’m merely making the point that it *could* be argued).