I've read that this is intended to ensure derivatives and modifications remain open source as well, but this would be better achieved by using a viral license. Assigning IPR to Razer just disincentivizes contributions; you can't create a business selling HDK accessories when Razer owns your designs and can revoke your right to use them.

I've thought twice about publishing mods before, and only went ahead because I don't intend to make money from them. But someone published details of a really interesting set of MR/AR modifications and software on the subreddit yesterday, then deleted the post, all their comments and their whole reddit account when I directed them to this license.