Money changes lots of people, my dad's sister (my aunt) married into a rich family, and turned into a snob, her husband pulling in £400k a year with ease due to a family business, they divorced and she;s humbled herself somewhat, their sons stayed with their dad, so the settlement wasn't as big as it could have been, and she's living well, but not half as well as she was. She went frombeing chauffeur driven in a Lexus LS430, to driving herself in a 2003 Audi TT, I'ts nice, just not as nice. She used to live in some £1.2m mansion in a very exclusive area, now she lives in a quayside apartment, is all nice, just not as good.
Shes much more down to earth now and my family are much more receptive of her.
On the same stretch money tends to magnify people's personality more than change, some people change, but most dont, they are just how they were magnified.
For example, if you're an a-hole, then you get money, you're likely to end up as more of an a-hole
Same way that if youre a good person, you're likely to end up to be more of a good person if you get money.