I don't think these are proprietary drives or connectors. I can't see anything there to indicate it is proprietary. I think Marvell just happens to be the firs

I don't think these are proprietary drives or connectors. I can't see anything there to indicate it is proprietary. I think Marvell just happens to be the first out with the NVMEoF drive adapter and switch chips. Kioxia and the switch vendor seem to be first out with the drives and switches using Marvell chips/boards. I wouldn't be surprised to hear in a year or two that you can buy a NVMEoF switch from a bunch of vendors, and then NVMEoF drives from your choice of drive vendor. The specifics of advantages over existing solutions I can't speak to except repeating much of what is in the article and video. I might be placing too much faith in Patrick + STH, but they seem excited, and other times there have been proprietary solutions for things they have pointed it out.