My therapist, who has multiple advanced degrees including substance abuse counseling is also an Alcoholic and a long time AA participant and sponsor. The co-worker that introduced me to AA ( and took me to the hospital during withdrawals ) has an advanced degree in the technology field and has held high-ranking positions for multiple decades. I've been to Smart meetings in my area too and there were plenty of "white collar" attendees there too. And I live in a very blue-collar part of the country.
I could keep going down the list but bottom line, there are lots and lots of professionals who are alcoholics who participate in not only AA but other recovery programs. Alcoholism affects all segments of the population and really doesn't care how much you make, where you live or what color/religion you are.
Where "professionals" choose to "go" is kind of irrelevant to me - what's important is where I choose to go for MY recovery.