The current crop of cores were designed several years ago before some key standards were adopted. They exist mostly to experiment and allow early adopters to develop software.
Next generation cores from companies like Ventana claim very high performance (we’ll see what PPW ends up being). Tenstorrent has already started talking about an extremely wide core to follow their already 8-wide designs. Qualcomm seems quite interested in the idea of moving from ARM to RISCV and there are other companies working on big stuff, but it takes 4-5 years and the final pieces of the puzzle only fell into place a couple years ago, so the designs are all in progress.
This is exactly correct. There is a long walk between working ISA and a high performance device that can sustain high IPC. Alibaba has the C930 now, only a few day ago. There are no credible performance figures on it yet, but they've made fast server grade ARMs, so they know how to build high performance CPUs. Then, as you say, there is Tenstorrent and Keller.
Can "Europe" achieve anything here? Anything is possible, I suppose... But given the players already at it, Europe is already way behind the curve.
Next generation cores from companies like Ventana claim very high performance (we’ll see what PPW ends up being). Tenstorrent has already started talking about an extremely wide core to follow their already 8-wide designs. Qualcomm seems quite interested in the idea of moving from ARM to RISCV and there are other companies working on big stuff, but it takes 4-5 years and the final pieces of the puzzle only fell into place a couple years ago, so the designs are all in progress.