alt Hacker NewsP40 is Tesla architecture which is no longer receiving driver or CUDA updates. And only available as used hardware. Fine for hobbyists, startups, and home labs, but there is likely a growing market of businesses too large to depend on used gear from ebay, but too small for a full rack solution from Nvidia. Seems like that's who they're targeting.
99% of interest is in inference. If you want to fine-tune a model, just rent the best gpu in the cloud. It's often cheaper and faster.