Is there really an example that would prove that this ever happens? Aren't patents usually just clever ways of doing things, not necessarily decisions about the exact dimensions/contacts/voltages/etc. All other manufacturers could easily just take patents and make their own standards based on them?
Intel provided another great example of this recently: Thunderbolt 3 controllers used to cost quite a bit, so they weren't included in lower-cost devices.
They saw that that didn't work out that well for them and made it royalty-free. Now it's basically the new USB standard.
