I think power and money corrupts people. Plenty of people who started out as honest business people turn into monsters. As you move up the ladder, less and less people are honest with you. Some are climbing the ladder because they are unhappy and that definitely makes things worse, they think money or power will make them feel better, when actually I’ve found living with less and doing things yourself is ultimately more satisfying.
Anecdotally, I personally felt how wealth corrupted me - when my economy car was totaled and my insurance rental gave me a Mercedes because they were out of reasonable models . After a week of driving it I started feeling like I was better than other people on the road. Luckily I got a replacement crappy hatchback and became a normal person again.
The secret to extending your flexibility for getting up and down as a lazy person is a low platform western bed or a Japanese bed. It makes getting up and down a part of your routine.
Also overall for foot flexibility and knees health barefoot walking and barefoot shoes make a huge difference. I use a treadmill barefoot a few times a week, and barefoot shoes when I can.