If IP becomes better implemented on more things.Apple DVD Player is the basic default DVD player on macOS. Load is like what you would, in a normal house, control with a light switch some of the loads in this house are 1000watts. all 234 Lighting loads (68 RGB color changing). The whole lighting system is controlled by IP or DMX (through serial). There's many things controlled by relays, and steam power too. Not including Automation gear but just AV equipment (TV's Recvs Projectors, Sources) controlled by automation gear, the House (yes house) I'm currently finishing has 11 IR controlled devices, 10 TCP/IP Controlled Devices, and 16 Serially controlled devices. To explain how prevalent Serial control still is. These days about a third of the products I integrate still have to be controlled IR (the worst), a third SERIAL (always best) and a third IP (might work great might suck). which means don't turn all the way off actually.
THIS SUCKED in our industry, so after years of screaming at them on mass at every CediaEXPO they relented and often now have a option in the service menu to 'listen to serial when off'. This is because in the cheaper TVs they couldn't meet energy star while having the main processor running and would have IR implemented on a low power uController, but Serial on the main. Which was a lie, they would respond fine to established control protocols for other similar tvs with one exception. For a long time (around 2008, if memory serves) many manufactures (samsung and LG especially) Would have a Serial port, but label it for service only. Many devices these days that have a serial control protocol do not have a port but instead support a usb dongle, or some have a 3.5mm stereo jack that is RS-232 (sometimes unlabeled because of shame). It's still common to find it on high end anything AV because it is preferred as a control method by integrators. (my school certainly as I'm old) It's not old in the AV industry. I was posting to tell about that "OLD SCHOOL CONTROL RS-232". Can't remember if the HDDVDs had similar issues. Interestingly a lot of early Bluray players couldn't play Burned CDs or DVDs. We for a long time settled on an LG model that played everything, Blury HDDVD and CD/DVD/Burned Both etc.
Of course a flood of competing models I can't begin to remember replaced it nearly instantly. I'm in the Home Automation and AV industry so of course back in the day I installed a few of these.
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