The statistic that “Just 100 companies responsible for 71% of global emissions” is better understood as “Just 100 companies responsible for selling 71% of global fossil fuels”. It’s fundamentally saying that there’s a few large coal, oil and gas companies worldwide selling us most of the supply.

If you want those companies to stop polluting, that amounts to those companies not selling fossil fuels.

Which is honestly the goal, but the only way to do that is to replace the demand for fossil fuels. Cutting the US off from fossil fuels would kill a ton of people if you didn’t first make an energy grid 100% powered by renewables, got people to buy electric cars, cold climate heat pumps, etc.