Who would use a steam engine?
Someone who doesn't want to burn gasoline. A steam engine has the ability to use anything that will burn. Had the technology been applied to steam engines like it was to gasoline engines, we possibly would have some viable steam engine transportation today. Steam engines were less efficient than gasoline or diesel engines, that is why they are not used much today.
The first steam engine was Hero's turbine, it is unknown what the horsepower output of it was. It was used as an item of curiosity, and did no real work. The first practical (useful) steam engine was the Newcomen pumping engine, used to pump water out of mines, it was an improvement over Savery's pump (which did use steam but not an engine) in that it more efficiently made use of the steam, it is…
Infrastructure (a country's transport) is crucial in industrialisation as it is needed to transport materials over the country. The steam engine, would allow materials to be transported to different factories but also the steam engines would have to be built so in itself the steam engine was a part industrialisation.