You set the bar at algorithmically reproducing every last sound that comes out of an analog piano. That's a hard problem to solve for the very small number of p

You set the bar at algorithmically reproducing every last sound that comes out of an analog piano. That's a hard problem to solve for the very small number of people who would care enough to purchase such a device when there's a perfectly good analog alternative that's been on the market since before the telephone was invented. You may think I'm exaggerating the requirements, but I think you're underestimating the difficulty of solving what is at best a very hard physics problem in real time with imperceptible delay as a human carries out a sequence of physical manipulations that has taken them years or decades to learn. My $1,000 phone with the latest, greatest SoC can't open a PDF with a noticeable delay. If your proposition is a middling approximation of an analog piano, you can already buy that at Costco for $500. Steinway and Bosendorfer don't seem particularly bothered about it.