My go to example here is 3D printers. The basic way that 3D printers work (FDM) was patented in 1988. That patent finally expired in 2009, and the explosion in 3D printing is entirely driven by the open source community. Most of the designs and firmware for consumer grade hardware came from the RepRap project, including my Creality printer. Heck, my printer uses an open source firmware designed for the RepRap project straight from the factory.

It's probably a good thing that the inventors of FDM got compensated in some way, but it's also hard to not come to the conclusion that Stratsys owning all the 3D printing patents basically held back 3D printing for a long time.