"The choke point is not the ports, this thinking comes from the same era as these chairs.The choke point is the few large online retailers.  The takedown process can be semi automated to identify fakes and then it's just a matter of a DMCA takedown for copyright which is just an email.The cost to do this isn't going to sell you any more chairs though."

"To me the question is very simple.  Did you add (or remove) something that pushes things forward?  Is your design better in some way than the original?If not, why bother?"

"I think this makes for an interesting example of the gap between pure design and engineering.  Horn speakers have been around for a long time.  We have well established designs, math, and so on to create very high efficiency speakers.  Without the familiarity with existing designs it's a creates a great deal of work inventing everything from scratch, likely without the performance of designs based on all those years of experience."