Tesla's enforcement of the no-resale clause and the subsequent blacklisting of a customer for attempting to sell their Cybertruck could have a neutral short-term impact on TSLA's stock. While it demonstrates Tesla's commitment to its policies and could deter future violations, it may also raise concerns among potential buyers about the flexibility and resale value of their purchases. The overall market reaction is likely to be mixed, balancing between support for strong brand management and concerns over customer restrictions.