1.
Mass media created it, social media killed it. When the platform shifts, your entire category narrative can flip in under a decade.
2.
Generational tailwinds are temporary. Three drinking generations created a boom; their aging and replacement by abstainers guarantees the bust.
3.
High-margin add-ons are fragile. Restaurants built 2-5% margins on 200-300% wine markups—when tastes shift, the whole model cracks.