Enshittification happens because to a certain extent, the market demands that firms maximise returns. Companies that don't do this get weeded out.
Climate change is a challenging co-ordination problem because nobody wants to tank their economy more than they have to, there's no real enforcement for "cheats" and even agreeing on an accounting basis is politically fraught. Politicians that don't grant concessions to powerful existing vested interests are less electable.
AI safety is predictably going to be a secondary priority when competition gets tight.