That may well be true in certain contexts. If, however, you are referring to those who are 'standardly' employed within a university - then that situation should be very rare. The only exception that I can think of is 'senior' academics who have a 'full' administration/management role i.e. Head of School, Institute or Faculty. They may not teach - but, probably, at least 'guest teach' here and there - yet still research. Outside of the university-setting - the only other exception that I can think of is 'independent researchers'. They are not tied by organisational contracts - so are 'free to choose their own agenda'.