Ah I see, yes this is also part of the 'BIM grand vision'. It's in the final stages of implementing an industry-wide system though. This would be hard to do without a solid toolchain in the beginning of the process, with a client to visualize how those parts look/work together. I don't see this as a replacement for 'traditional' tools, more like an add-on.
Big manufacturers already provide construction blocks, in standardized formats, for importing into design tools. From ICF forms to wallpapers. The 'marketplace' part is missing though, that's true. I don't even think it's a matter of technology, it's just that the industry isn't ready for it IMO. Construction is a very conservative industry.