"Winning" a national lab definitely confers benefits far beyond just financial ones – these are, by definition, the biggest deployments in the world. Both the technical experience setting these up, and the reputational benefit associated with this, is worth a great, great deal. (I don't know how much money HPE Cray makes, for example, but I'm sure it's not the money it makes that's stopped HPE from quietly sunsetting the brand.)