It's the reliability factor and cost of investment and no sort of incentive or reward to switch to clean energy. They already have something that works and is reliable, when u have diesel engines, you can put more oil in there and it's guaranteed to generate electricity, you have better control cause your in 'charge' basically, same with coal, if it runs out you go and add more coal. To me anyways, I feel it comes down to who is in charge and reliability why fossil fuels are still popular. I also think there is an economic reason also, they already invested heaps into this sector, to ask them to re-route to a highly fluctuating source plus the capital investment required is a hard selling point.
I mean solar, wind, all are great but we all forget that we are not in charge of wind and the sun, it controls itself, nature controls it, we have no 'input' and are at it's mercy brother and that means it can fluctuate and not provide energy at any time. People don't like that sort of risk, business wise and customer wise!!! They want guaranteed safe bets basically. Solar-Wind and all these will remain small projects individuals do who want to try it out for difference nothing the big natural resource boys are going to touch. The only difference is if the govt 'forces' it on them through laws and barrs fossil fuels or makes it highly unattractive with 'penalties' that affect their bottom line. People don't change if they don't have a reason or pressure too, it's an evolutionary concept and I highly agree with that. The big corps will change only if it's 'forced' either thru penalties for using those undesirable energy sources or through if there is laws out there that says it's illegal and so forth.
That's my best guess, I am not a climate change person but just know how evolution works and it works across not just animal life but even in social life.
