JimJast: As I understand it, you are asking through what mechanism energy is being created continuously to offset the energy lost by photons in traveling through empty space. I am not aware that any such energy loss has been either observed or predicted by theory. The cosmological red shift is explained by Doppler effect, not by loss of energy by light while traveling through space.

Your argument seems to be based on the idea that photons lose energy through dissipation of rest mass, which implies that photons have rest mass greater than zero. Efforts to determine the rest mass of photons have been able thus far only to establish lower limits on the possible rest mass of a photon. They have not been able to show that the photon has precisely zero rest mass The fact that photons travel at a speed that special relativity says cannot be exceeded, much less attained by matter implies that photons have zero rest mass.

If you can document information to the contrary, please do so by citing references.