I am looking at allocating starting technologies based not only on the fact that they actually know the stuff, but really have the ability to actually make the buildings.
e.g. Many African nations may know about factories and industrialisation, but do not actually have the ability to create them, because their infrastructure, schooling, finances, etc. are very poor.
I am considering giving some African cities factories where some level of industry has been attempted with outside financing, but these will be few and far between. I may also use this allocation 'philosophy' on other technologies, like the ability to build universities, etc.
So in fact, many industrial-age technologies (and maybe even some renaissance-era) may end up being removed from some nations, let alone modern-age technologies.
While this may impact on 'balance', it does reflect a more accurate view of the world.