Before revision: The vendor, who has most of his (or her) products in the 'cash cow' quadrant, should consider himself (or herself) fortunate indeed, and an excellent marketer, although he or she might also consider creating a few stars as an insurance policy against unexpected future developments and, perhaps, to add some extra growth.
After revision: The vendor, who has most of their products in the 'cash cow' quadrant, should consider themselves fortunate indeed, and an excellent marketer, although they might also consider creating a few stars as an insurance policy against unexpected future developments and, perhaps, to add some extra growth.