Singular Solidarity?

Ben Ansell (Oxford University) presented this year's BBC Reith lectures, using arguments from his recent book Why Politics Fails (https://www.theguardian.com/commentisfree/2023/dec/17/reith-lectures-miss-point-politics-fails-when-avoids-issue-of-class). Ansell maintained that, basically, everyone is selfish or, at the least, self-interested. This argument is not a million miles away from the conclusions of Richard Dawkins (another Oxford alumnus). Dawkins, in his book The Selfish Gene, claimed that all DNA is programmed to leave the maximal number of copies of itself. Consequently, organisms are destined, whether they like it or not, to follow this internal directive. We don't really have 'choice', as our genes dictate what we do! Ansell extrapolates from this, claiming that folk 'only care about solidarity (what's good for the collective or our species) when we need it for ourselves'. If Ansell is broadly correct, the chances of meaningful action on climate change, seem vanishingly small?