With the success of 3D printing and the pioneer Makerbot we are seeing also a discussion on whether Open Source Hardware is a sustainable business. Recently Makerbot has made some changes that have made the Open Source Hardware movement unhappy. See the point of view of Makerbot and then a reply to that.
From Bre Pettis, Makerbot CEO Fixing Misinformation with Information
And an opinion from Rob Giseburt in the Make Makazine Is One of Our Open Source Heroes Going Closed Source?