“Various reasons” being the intractability and absolute dominance of capitalism. People are in a race to dominate the world, as such they can’t be bothered with writing public domain software, or waiting for renewable energy to come online. They can’t even wait for hardware to be built before buying it!

I mean, it’s kind of like asking a herd of zebras, “would lions be so bad if they just ate grass instead?” Like, sure, but the reality is that lions will always eat meat just as inevitably as AI will always be horrible under capitalism.