It is one of components for being advanced. In purely tech and science, Russia is second-most advanced country in the world. Yet, it`s economy, military and society are far less advanced, than Germany or Japan.
You can have the most awesome weapon, or ship design, of whatever, but if you don`t have the social structure to support the big-scale implementation of tech, you will be less advanced. Simple, really.
Well, at least I, was able to get arround 10 NIs in the timeline of Demo. I would assume that with decent monarchs, starting in 1444, you would unlock all NIs by 1530 or so.
I would certainly dispute the notion that Russia is the second-most advanced nation in the world, but this is not the place for such a discussion.
I understand your view that ideas and tech are both part of an overall level of advancement, but it is flawed logically, historically, and in gameplay.
Your assumption about the idea timeline is very inaccurate. The seventh idea group slot is unlocked at admin tech level 26, out of a total of 33. Do you think that people will typically complete about 3/4 of the techs in less than 1/3 of the game?