I guess depends on the client, his lifestyle, what he wants in exchange, how easygoing he is and of course is up to the escort to say yes or no based on his financial expectations, etc.
Not everybody willing to have a kept man / sugar boy looks and has the pockets of Marc Jacobs... Besides is not the same sharing a huge penthouse in NYC or Miami, some locations and places might be more appealing than others, etc. I would suggest all escorts who would accept this scenario to be aware is very unlikely not to last forever.