Years ago there were a few companies[1] that tried a clever workaround for streaming broadcast TV. The scheme ultimately didn't hold up in the US, but I've always wondered what keeps Netflix from doing something similar with their physical discs. Controlled digital lending[2] isn't exactly settled terrain, but given their resources and increasingly precarious position you'd think Netflix would press the issue.

1. https://en.wikipedia.org/wiki/Aereo#Service and https://en.wikipedia.org/wiki/FilmOn#Legal_issues

2. https://en.wikipedia.org/wiki/Controlled_digital_lending