Elon Musk skipped his PhD program and did many more things than spending time in school would have allowed him to do. Of course, most people aren't Elon (probably a good thing).
Other than preparing you for a career in academia or some highly regulated environment where education is erected as a barrier to entry, it's hard for me to think of "many more things" that are open to a phd holder than to someone who is not.
Elon Musk skipped his PhD program and did many more things than spending time in school would have allowed him to do. Of course, most people aren't Elon (probably a good thing).
Other than preparing you for a career in academia or some highly regulated environment where education is erected as a barrier to entry, it's hard for me to think of "many more things" that are open to a phd holder than to someone who is not.