The transposition of the Second Consumer Credit Directive (CCD2) signals the end of the "light-touch" regulatory era for European fintech. As "functional symmetry" closes the loopholes that fueled the BNPL boom, founders and executives face a critical pivot. This essay explores the restructuring of unit economics, the friction of mandatory credit checks, and why the industry's future belongs to those who can master the "double lock" of CCD2 and the AI Act.