I suppose my reaction is that popular archeological articles seem to effectively defy economics as a force in their explanations, and seem to prefer treating the cultures as being under an impaired superstition about the world.
It seems like uncovering a stadium, airport, or the Washington Mall from our world today and saying it was for rituals and ceremonies, which sure, abstractly it is, but it seems a bit filtered through a lens of studying them as primitive pagans. Nobody shifts hundreds of tons of rock for being seized by astrological magic.
If you start with the loop of necessity that nothing is ever more than it needs to be, we can bootstrap the question of for what was this necessary? It's even more plausible to say pyramids were the product of a policy of Ancient Keynesianism, than to treat megalithic builders as primitive. Maybe I'm just as curious as archeologists are, but if we applied how mystified some modern academics can seem about trade and economics today and then apply that back to studying ancient cultures, I'd wonder if there were some opportunities to reduce some blind spots.