In ​The Ground for Professional Ethics, ​Daryl Koehn writes about her 1st group: Although professionals have traditional

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In ​The Ground for Professional Ethics, ​Daryl Koehn writes
about her 1st group:
Although professionals have traditionally been seen as acting in
the
spirit of public service, these antagonists deny that professionals
are
benefactors. On their view, the ancient Greek physicians erred
in
seeing themselves as “lovers of mankind.”... At best, the
professions
are houses of trade. They may pretend to operate for the public
good.
But, at root, professions are just another form of commerce, albeit
a
particularly well-entrenched and well-organized species of
it...So
viewed, professions have no inherent legitimacy. They are only
a
dominant ideology to be replaced, one infers, by institutions
or
practices that truly aim at the public good. (p 2- 3)
question :- What does Koehn mean by a “dominant ideology”? What
is the first group’s argument
here? (minimum:- 300 words ) please in your own words ?