Three characters in this market: engineers, traders, and regulators, each with their own narrative arc in the face of quantum optimization. Engineers proudly unveil a system capable of managing 250 assets from the S&P 500, an undeniable technical feat in the laboratory. Yet, the real challenge does not lie in the size of the portfolio but in the unexpected, the moment when the market story shifts, as during the flash crash of 2010. Regulators, for their part, question the performance of such technologies when liquidity disappears or a crisis of confidence shakes the foundations, like a seismic shockwave.