They would abandon both in a New York minute if they had to choose between their riches and them.
For pragmatic purposes I usually go Republican. But I agree with what you write. I've often heard utterance of the "balanced" complaint "Democrats won't get out of my pocketbook and Republicans won't get out of my bedroom" or something to that effect. The reality is the mainstream in neither affiliation gives a damn about anyone's bedroom and both want more of the money in your pocketbook to be in their pocketbook. Frankly, I'd say it's a very small minority of Republicans that care what you do in your bedroom, but among these are some of the loudest blowhards on planet earth. But among these loud chest-thumping blowhards it never escapes my notice that they usually have found a way to put a lot of cash in their pockets over the years.
For most of earth's population, its about increasing their own personal economic circumstance. It's about the money.