Enterprise Wiki un-DRMs

In a great argument against DRM inside the enterprise (e.g. asserting control over email), a truly salient point:

When I talk to working IT professionals, the trend is to open up information "behind the firewall" at a company-not lock it down. People aren't worried about how to DRM-ize everything. Instead, I'm seeing enterprise Wikis. "Enterprise Wiki" still sounds funny, but companies with lots of trade secrets are rolling them out. "Edit this Page" adds value, and DRM has the opposite effect.