There's the genuine concern that the solutions being proposed will squander our lead over our competitors, by basically redistributing wealth from developed to developing economies[1], and that the people most loudly clamoring for action also tend to be the most opposed to solutions like nuclear power, that would allow us to cut emissions without sacrificing our self-interest as much or at all.
Also, you talk about the profitability of companies as if it is isolated from the prosperity of ordinary people. It's not. And higher energy prices wouldn't just affect a few companies, but just about every single industry.
Environmental activists aren't helping their case when they engage in behavior and lifestyle choices perceived as whacky, and worse, try to impose them on others. People aren't going to abandon the comforts of modernity, so trying to persuade them to isn't a good strategy.
[1] For example, the theory of deals like Kyoto and Paris is that developing economies can keep increasing emissions while developed ones have to immediately cut. Fair, but fairness between countries is naive. The US should do whatever it can to maintain and grow its lead over China.