Why isn't EOL using Wikipedia?

Interesting paper by Huss et al. in PLoS Biology entitled "A Gene Wiki for Community Annotation of Gene Function" (doi:10.1371/journal.pbio.0060175). Essentially, the paper describes using Wikipedia to create a comprehensive gene wiki:

In principle, a comprehensive gene wiki could have naturally evolved out of the existing Wikipedia framework, and as described above, the beginnings of this process were already underway. However, we hypothesized that growth could be greatly accelerated by systematic creation of gene page stubs, each of which would contain a basal level of gene annotation harvested from authoritative sources. Here we describe an effort to automatically create such a foundation for a comprehensive gene wiki. Moreover, we demonstrate that this effort has begun the positive-feedback loop between readers, contributors, and page utility, which will promote its long-term success.

Given that the EOL project seems stalled (i.e., the current content hasn't changed), and the existing Wikipedia content is often much richer than EOL's, one has to ask why EOL doesn't give up it's current model and make use of Wikipedia? In other words, create all its taxon pages in Wikipedia.