If it helps, try to consider the incident as it struck me: you did top-notch work, really polished it up to offer your customers a quality of experience pretty much unparalleled in your market, and witnessed the disheartening collateral damage of having inspired the wholly uninspiring.

The off-brand stuff just never tastes quite right. If they were genuinely so immature about the confrontation, they're not going far. Keep on keepin' on.