The problem with that idea is that the insides of stars is full of other non-transparent stuff that photons strongly interact with. The chances to interact is

The problem with that idea is that the insides of stars is full of other non-transparent stuff that photons strongly interact with. The chances to interact is proportional to the cross section, which for an electron is around 0.6 barn. In comparison, the cross section for photon-photon interaction was measured as 70 nanobarn, so there's a factor of 10^8 difference in probability of interaction. Photons doesn't outnumber electrons by such factors. Further, there are plenty of atoms in the outer layers of a star, and these have something like another 10^8 advantage over electrons.