Well... they tried to patch that by locking the analog outputs on Blu-ray players to 960x540 (slightly better than DVD quality), and by removing the analog outputs entirely in 2013 on all new players after that point.

However... even the best intentions went awry after the first Blu-ray player software for PC was released with the flaw of allowing Print Screen to capture frames. Which caused people to quickly figure out they could run a script using Print Screen to capture all the frames, while having their audio-out headphone jack connected with a male-male 3.5mm cable straight into Line In. No real hacks necessary!

This was, of course, patched by blacklisting the player key and rolling out new keys in updated player software (to render new discs unplayable without an update) but it was a major oversight. ;)