...Seriously, guys, fracking isn't that bad. The process itself, at least. It's essentially pressurized water with lubricant and disinfectant. The way it was discovered was a guy trying to keep his job when he was overseeing the much more expensive process using chemical gels rather than water to break up the rock. And natural gas is a transition fuel anyway. Furthermore, it's not always just 'established interests'. If you're wanting to get in on the energy business and fracking was just discovered, are you gonna try for offshore drilling, or hoping you find some new easily accessed deposits, or are you going to try this new much cheaper method of extracting from previously economically unfeasible deposits?
Nuclear is already less cost-effective than renewable sources, given how long it takes to start up a plant and the expenses involved in the safety measures.
Re: Capitalism and energy producers: The established interests are largely fossil fuel oriented, yes. And as they start having to raise prices because the price of extraction increases, their competitors will gain an advantage. Because the total amount of available fuel is not in one giant pool that will all run out at once, it will run out bit, by bit, and there's already a massive movement towards sustainability and renewable energy. Civilization as a whole is not going to collapse. Apocalypse scenarios are actually really bad for getting people to listen to your message, actually; there's the standard reaction of 'world hasn't ended yet, why should it now', and then there's the fact that people don't like hearing negative news like that as a rule of thumb anyway.
Though it's true that Big Oil probably won't transition into Renewables; companies don't like innovating if they aren't forced to, and they still don't then, a fair amount of the time. Markets don't solve everything, mind, Sergarr. Particularly externalities. It's only over the long-term and large-scale that those externalities bite back, which is why we have regulations.
Oh, yeah, and biofuels are fucking stupid, by the way. At the moment most of them are literally just wasting carbon. Costs like a liter of oil to get 0.7 liters of equivalent energy biofuel.
Capitalism only prioritizes short-term profit over long-term profit in the short-term. Our current market system/stock markets method of basing everything off quarterly profits and CEO celebrity status doesn't help. Trading CEOs around and hiring from outside means they don't have a stake in the company, and even if you try to pay them in shares, they'll always come away with something for themselves even if the company itself crashes into the ground.