It’s bullshit that DVDs & BDs aren’t distributed in CD-style jewel cases. I have finite space for the discs, most of which has already been taken up by the overlong/oversized cases they come in. What, did the people-that-be think buyers would confuse them with CDs if they were packaged that way? Then just clearly label them as DVDs/BDs, you turd-squeezing monkeys!
Some early DVD releases did come in jewel cases. (As did the infamous now long dead DIVX DVD format.) I have a few. It seems more common to Japan though.