Interesting. I only really notice it happening once my POPs are about 50% craftsmen in my provinces (typically playing as Austria), between me the UK, the U.S., and eventually Germany it pretty much makes it impossible for Italy/Japan and others to build any factories at all, which I see as sort of accurate but also sort of not since goods from the major powers didn't have full penetration into the markets in other countries. U.S. wasn't supplying 100% of Japanese clothing and canned food for instance.
Maybe I will write some events to buff demand for "luxury needs" to include more basic goods as well...
Follow-up question, maybe someone can confirm my understanding. WM prices are fixed right? My local markets don't sell for cheaper than WM prices unless I use negative tariffs? Also, my POPs buy from my markets first right? So if I am building clothes, lets say I have an aggregate demand of 6000 clothes and I go and produce 6000 units of clothes in my factories and no more (carefully regulating how big my factories are and how many people I allow to work in them), does it then follow that ALL of my clothes sold are going to my own POPs?
If it does, then does it also follow that imposing negative tariffs or subsidies at this point will make the goods I produce only for my own POPs more cheaply available to my POPs?
Let's say my economy for factory goods (non-RGO goods) is fully self-sufficient I produce all the factory goods my POPs demand and not one unit more. Does that mean my entire market for factory goods (assuming my POPs can afford to buy them) is fully satisfied and all my goods will get sold? Also in turn that means I will not import any factory goods and that if I impose negative tariffs I will make all my production goods even more available to my POPs?
Side note: I feel like GDP per capita or income per POP should play a bigger role in migration choices in-game. If I am the USA and there's 0 jobs here for immigrants... why would they keep showing up? Some would be fleeing political oppression however certainly it'd be fewer coming over right? Conversely if I am a European power with an open immigration policy and very low unemployment... shouldn't European POPs be running over? But good lord I don't want to take all the time to MOD all the POP files for cultures and test everything