It's not a copyleft licence, it's a modified BSD-style licence. Basically, you can do what you like with it, except (a) delete or replace the licence, and (b) trade on the names of Open Group or it's developers.
> crippling it with patents and some weird licensing BS.
Not to mention that part of the lock-in is that certified implementations MUST validate a certificate from a peer, which MUST have been issued by Thread Group, and they will only issue one to a licensee. That is, it literally won't work unless the implementor has a licence.
It's not a copyleft licence, it's a modified BSD-style licence. Basically, you can do what you like with it, except (a) delete or replace the licence, and (b) trade on the names of Open Group or it's developers.
> crippling it with patents and some weird licensing BS.
Not to mention that part of the lock-in is that certified implementations MUST validate a certificate from a peer, which MUST have been issued by Thread Group, and they will only issue one to a licensee. That is, it literally won't work unless the implementor has a licence.