Exactly, you have to have transport and agriculture to enable that level of art. Likewise, tourism, education, construction. It is really a meaningless comparis

Exactly, you have to have transport and agriculture to enable that level of art. Likewise, tourism, education, construction. It is really a meaningless comparison in one sense. But it does make sense in terms of things like trade disputes: why put tariffs on ordinary steel/aluminum to prop up an inefficient and undercapitalized industry, when that imposes massive costs on a much bigger industry like construction? Or alternatively, one should look at the linkages between industries, and see what the choke points are.