HDDVD maxed out at 1080p when it was on the market. It never had the capacity for 4K video at the time, but, like BluRay, it was capable of adding layers to the disc (like BluRay)
Sony owns the patents on BluRay IIRC ... Samsung probably got sick of paying them + the world is moving to streaming.
I prefer having media I own, but I’m clearly in the minority these days :-). If I were emperor, we’d all be using cartridges with ROMs for everything since they’re cool looking :-).
Ok you’re right l meant UHD—DVD of course jeez, you got me.