> One person's individual change is a drop of water in the ocean when compared to the vast amount of emissions and pollution and waste produced at scale by corporations.

With emphasis on "One".

There's 8 billion of us; our diets have varied environmental impacts; and collectively agriculture is, though not the biggest problem, a big enough problem that we can't solve climate change without also fixing it.

https://ourworldindata.org/emissions-by-sector

Also, the problem with framing it as the fault of corporations, is that the corporations do what they do in response to demand.

And the laws come with costs: this is a perennial issue during elections and "over-regulation" has been the battle cry of UK and US conservatives for as long as I've been paying attention to politics — so sure, if I was world dictator I could make it happen (and build a global power grid for green energy, we don't even need superconductors for that), but that's not the world we live in.

Making a convincing reason for consumers to demand different things, or for business to choose sustainability just because it's cheaper, or shifting the Overton Window so the relevant laws aren't just a political football, that's hard.