Hasbro doesn't have the right to stop competitors making third party products or transforming robots *cough*Voltron* but it's a shame that so few actually create something ORIGINAL that they come up with on their own. For example GlacialLord combiner. But how often do you see a *new* toy made in an 80s homage? It's rare (only other one I can think of is the Reaction figures that use Kenner style packaging, but can't think of any robot beyond GlacialLord )
There are legitimate parts and upgrades for Transformers on 3d printing sites like Shapeways, and Hasbro are making an attempt to do something with it.
On the lookout for MISB Headmaster Highbrow, Takara or Hasbro. I'm sure I could make you a sweet deal!