Tomche-
Bakeries are not Pas Akum, they are Pas Palter. Palter literally means baker. And many poskim regard bread of companies as even better than Pas Palter, since the reason for the gezeirah was to prevent a closeness to the family of the non-Jew that would lead to intermarriage, and with packaged goods this is not really plausible (And that is the reasoning in halacha why the baker’s bread is better than the private person’s bread).