LEGO is also just consistent quality, those things will literally last through generations, and probably still be compatible, too. That quality comes at the cost of lower manufacturing quantities (comparatively LEGO still manufactures a fuckton of shit, but compared to funko pops it’s not even comparable) coupled with constantly changing and rotating sets, it can make sets really valuable. Price per brick is always gonna remain the same, since there’s only one source, so if you wanted to reconstruct a set from buying bricks individually online it’s almost always gonna come to more than buying the set outright, or at best be comparable to buying the set outright. They’ve really gone and created an incredibly self sustaining market in that regard.