I think it's you that need to support your reasoning. It is true that the capitalist elite wants to maximise profits for themselves with no regard other concerns, and since they don't have to pay for the gruesome externalities they inflict, then they will continue to happily make bank out of gassing the world if they are not forced to stop.

On the other hand, it's ridiculous to say that the solution is "just stop bro". It's anything but technically simple. If you outright ban all fossil fuels, how do you make electricity? How do you stock supermarkets? How do all goods get transported? How do people move about? Obviously it's not so simple as that. You need a plan to transition to sustainable energy and a sustainable economy in general. For instance, you need a massive Green New Deal to fund this transition, you need carbon price+cap schemes to force the transition, etc.