Light traveling long distances through the universe will red-shift due to cosmic expansion. Particles like electrons also have a wavelength described by the equation λ=h/ρ. If an electron were traveling through the universe undisturbed would it's wavelength also be stretched by cosmic expansion resulting the loss of momentum? If so, would the same logic also apply to macroscopic object meaning that over cosmic distances and time scales all objects would trend toward 0 velocity with respect to the Hubble flow? In the early universe when "cosmic time scales and distances" were tiny, could this be the mechanism that selected 1 particular frame of reference that we now observe as being at rest with respect to the CMB?