Obviously that's a pretty nice passive income stream. But it's not really have a couple nice homes in prime locations, hire full-time assistants, fly private jets everywhere, etc. sort of money.
For instance: private air travel in USA. Find some friends with aligned lifestyles and together buy a high performance twin engine propeller passenger plane that seats 8 people for about 5 million.
There are agencies who will take care of all of the complexities of owning and operating this aircraft and renting it out while you’re not using it. With careful decision making you can bring the aircraft to close to net zero steady state operating cost as the revenue flights paying for maintenance, storage, liability etc. You also get access to a stream of excellent pilots on demand.
These agencies can also book you on a larger plane in their portfolio when you want to go further and for some reason aren’t willing/can’t fly first class commercial.
Real estate is much simpler—tons of fabulous rentals all over the world. And an assistant surely could be hired somewhere for 100k or less annually.
There's an 'aviation YouTuber' who owns a private jet (through his medical supply company?) and puts up videos of his travels: