Amen. It's a shame dell released that one 8K monitor and peaced out. It's still available but it's expensive as hell, and I could not for the life of me justify needing dual DP cables. But I'm constantly tempted...
Each time they release something like this it's got to require two inputs, is clunky, may have tearing problems under some platforms, and is discontinued not very long after due to lackluster sales. Remember they had a 5K monitor plagued with the same kind of trouble?
Given that most of the gear in the business world is laptop-shaped, requiring two DisplayPort cables is just not going to fly. What do you mean, "get that expensive USB-C to dual DisplayPort dongle from Sonnet"? I thought DP1.4 was perfectly capable of driving an 8K monitor over a single cable, heck, that's what my old Dell Precision 7520 laptop is supposed to be able to do.