Unfortunately, it's a problem for a long time. This isn't something that happened in the last few decades.
Hollywood was in California to avoid Edison's patents.
The Wright brothers spent their time and energy suing people and engaging in feud instead of spending their time improving their inventions.
3D printing didn't really emerge as a hobby market until the 2000s after the expiration of patents.
Makerbot Inc apparently patented inventions that belonged to the 3D printing community at large, and then get bought up by Stratasys.
So you get intellectual common theft, inventors suing people instead of further innovating, patent trolling, etc.