1. The world didn't switch to fossil fuels when Watt's steam engine was invented in 1774.
Hydro was a bigger share than coal in most early electricity grids, though coal was still very important.
Then you have the oil industry and liquid transport fuels at the same time.
Plus of course nuclear and renewables later.
Fossil fuels only become the dominant part of the energy landscape in roughly the 1920s, so it's hard to argue that the industrial revolution=fossil fuels.