Obviously corporate greed is not literally our only problem.
But insofar as society's collective focus is required to address societal issues, we would be extremely hard-pressed to focus too much on policy aimed at addressing corporate greed--even if it results in neglecting policy around things such as NIMBYism and any negative impacts environmental groups may have on the progress of clean energy.
Far more often than not, I tend to find that people calling to divert focus away from corporate greed are bad-faith actors working in service of, surprise, corporate greed.