Wikidata is trying to make re-use possible beyond Wikipedia, as well. In fact there's already a couple of apps built with it. Here's a trivial genealogy visualization using the API:
It's also worth noting that Freebase itself heavily relied on parsing Wikipedia database dumps to build its ontology -- to a large extent Wikidata is giving structure to data that's been in Wikipedia all along.
https://toolserver.org/~magnus/ts2/geneawiki/?q=Q1339
It's also worth noting that Freebase itself heavily relied on parsing Wikipedia database dumps to build its ontology -- to a large extent Wikidata is giving structure to data that's been in Wikipedia all along.