It takes labor to build anything. Building concrete forms and cutting/tying rebar together takes way less labor than building a boat hull out of wood or steel, there’s a reason every warehouse built these days is a tip-up constructed from prefabricated wall sections. Prefab concrete is cheaper than any other building method (excluding stick built).
Construction isn't a good bell-weather because it's so micromanaged by regulation. If they're doing tip up around you it's because the rules disadvantage steel buildings.
Building anything these days is like responding to a government contract RFP, it's an exercise in cost cutting to get around whatever industries, companies, etc. got the crap that makes them money written into the rules.
Don't look into it. You'll want to armor a bulldozer. Igornance is bliss