When open becomes opaque: The changing face of open-source hardware companies
This is a very well-written article by someone who is intimately knowledgeable of the history of the field. The interview with Josef Průša is particularly illuminating.It's a very, very sad story. It sounds like open-source hardware could have thrived if it weren't for China subsidizing local companies and enforcing bad IP claims for its domestic companies (which was really IP stolen from other countries but filed for patent first in China by Chinese companies).