> Since when do we include pharmacists with doctors, lawyers, and MBAs?
Since when do we include MBAs with the others, all of which are not merely holders of notionally professional degrees, but actual practitioners of licensed, regulated professions?
This line of discussion seems unproductive. Various business professionals are pretty uncontroversially included in the term "yuppie."
This is true regardless of whether you think they hold the same prestige, cachet, etc. of lawyers and doctors and regardless of whether there should be licensing and regulation of, say, investment banking.
Perhaps "yuppies" was not what you actually meant?