[walterbell]

On the video front, low-cost and legal HDMI splitters and downconverters have appeared in recent years.

HDMI includes multiple protocols: https://news.ycombinator.com/item?id=31828193

HDMI blocked recent AMD contribution: https://news.ycombinator.com/item?id=39543291

Ink jet printing is protected by patents. They will expire eventually.