Actually fossil fuels have a HORRIBLE ROI.
Think about it: how long did it take for the oil or gas to initially form? Millions of years. We're literally just reaping what was started before humans existed. If it took a decade to grow a single stalk of corn to maturity, would corn have a good ROI? No.
Meanwhile: solar, wind, and hydro all generate power with energy absorbed between a few days(wind, hydro) and instantly(solar). Of course it takes billions of years for a star to form, but the sun will outlast the oil so....
I mean, even big oil companies are looking into wind, solar, hydro, wave power, etc... Because they know fossil fuels won't last forever.
Your entire post is so full of misinformation, I don't where to begin...
Big oil is in the industries you mention to make money, period, so yeah...we will start there...
The only thing more efficiently producing energy than an internal combustion engine is a bicycle, so I will give you one to the side of green there...
Other than that, just like the climate change BS we read about ice caps melting and disappearing 5 years ago, we have read the same old BS about petrol running out since the mid 70's when jackalope Jimmy trotted out that BS.
1. Fossil fuels don't take millions of years to be created? Do tell, how are they made and how long?
2. You do not understand energy or efficiency. At all.
Efficiency is the energy converted into usable work vs the energy used.
An ICE is about 25% efficient with a theoretical efficiency of about 50% (we aren't there yet). This is because combustion of fossil fuels produces light, heat, sound, and pressure. Only the pressure is used to turn the crankshaft. Everything else is expelled (with some exceptions of heat being used for a heater in older cars). Thats alot of energy lost.
An ectric motor is more efficient than an ICE. It uses about 90% of the energy it gets to spin. This is because electrical energy, while it does produce heat when in a circuit, produces minimal heat when resistance is low. Thus, most of the electrical energy can be used to power the motor.
Biking is efficient but mostly because its a very light vehicle that's human powered.
And yes, oil makes money. Not saying otherwise. But they make it off digging up something that took millions of years to produce. They did not make the oil themselves.
If I put a box of 100 new ipads on a top shelf and tell you that you can sell them and keep all the profits if you get it, does that mean iPads have a good ROI for sales? What if I tell you that you had to build your own?