1. Magic items brought into the dead magic zone around Danor continues to work for a while; it just slowly loses power over the course of a few months. So you could attack Danor with the Coaltongue's magically-enhanced steam engine and brand, but holding territory isn't ideal.
2. Gutenberg-esque printing presses, yes. New York Times style printing presses, no.
3. Revolvers are only in the hands of the gunsmiths who hand craft them. Even rifles are rare (folks have muskets; much shorter range). Barrel size is not standardized. Basically firearms are at a 17th century level, while vehicles are at a 19th century level.
4. No electricity. Except in the rare cases of mad scientists who want to animate the dead with lightning bolts. But certainly no electrical utilities.
5. Gaslight is cheaper than magic light. Just because Risur can use magic doesn't mean they do it all the time.
6. Factories are more like old fashioned mills, huge forges, stuff like that. They use either steam power or water wheel power to move heavy stuff, but most of the work is done by hand, with hundreds of poor sods crammed into buildings with very poor ventilation.