Yup, failed so much that no one ever used them for anything; they just bought them to sit on a desk somewhere, totally unused...
Not sure if you're being sarcastic, sometimes hard to tell here
But the Cube was a failed product and quickly discontinued. The Trash Pro had a longer life, especially at professional studios, but it quickly became outdated and got a lot of backlash.
Was it though...? There is the thought that Jobs started NeXT for the express purpose of selling it to Apple... Steve needed hardware to show off the NeXTSTEP OS...
Steve was super young when he started NeXT, I doubt he had foresight in 1986 to make a company so Apple hires him back 10 years after and buys his OS. NeXT was solely used in enterprise and education sectors, in both of which it wasn't selling like hot cakes.
Which I am fully aware of, and which I usually remind folks of that ask why anyone would need an ASi Mac Pro with PCIe slots if it can't run third-party GPUs...
I hope you're joking. There's a ton of professional studios who need PCIe slots for audio and video cards. Here's a
good example of how it's used by a music composer professionally. There are more professionals that need this, I am pretty sure people like Hans Zimmer uses a 2019 Mac Pro with all kinds of PCIe cards since he moved to macOS from Windows (he uses Cubase). Not counting the high end editorial houses which use PCIe cards to output high end 4k-8k video to reference monitors, etc. And not to mention PCIe NVME addon cards, USB expansion cards, NVME RAID cards, SATA cards, and so on. There's a huge community of Pros that need PCIe slots and they are not willing to move to PC/Windows. I can post more examples but you can find them on your own, I've been in plenty of studios where they have millions of dollars worth of hardware and the 2019 Mac Pro is sitting there with all kinds of PCIe cards inside for day to day work. Apple knows this market very well and won't let them go, I'm sure.
A Mn Extreme Mac Cube would basically be a Mac Studio XXL, giving two form-factors to amortize the R&D cost of the Mn Extreme SoC over...
I think that's a worthless investment for them. The Mac Studio is fine for most people, and even the Mac mini Pro is a fine piece of gear, but people I am talking about that need a tower like the 2019 Mac Pro are here to stay. Apple ignored them from 2013-2019 and there was huge backlash from the community and my peers (including myself, who works in this industry) and finally Apple listened in 2019, then the ASi transition happened now we are back to being in limbo, although the 2019 is a fine machine (I use it daily).
They already have taken care of the standalone desktop for Prosumers with the Mac Studio and Mac mini M2 (Pro and regular). Now we need the professional Tower update. It obviously won't be cheap, that's for sure.