I'm not so sure that's a valid generalization.
I'm getting a PhD in computer science, but any corporate R&D department I know of that would hire a fresh graduate would only let you do R in service of their particular D needs, i.e., you have too little autonomy.
I definitely think I can find jobs that I love and that are lucrative (I have some in mind), but I won't be doing research as, say, a tenured professor would define it.