I just Googled 'the importance of coal to the industrial revolution' and it would seem that problems of mining coal, i.e. flooding, urgently necessitated a mechanical solution to the problem and the Newcomen engine was born with the Watt version following after. It could be said that, without coal in England, the industrial revolution could have been much later and also somewhere else that did have coal. The commercial steam engine was developed out of the desire to solve a particular problem, which was to help extract a fuel with a high energy-density. A classic case of necessity being the mother of invention. Whilst we were still burning wood the need, or commercial incentive, for steam engines wasn't there.