If On disappeared tomorrow, a devoted core would miss it, but the broader market would substitute fairly easily, so indispensability is moderate. On the second half of the question, On's growth model is socially and regulatorily sustainable, with tariff exposure as the main external friction rather than any practice that harms society.
On indispensability, the honest answer is that On occupies an emotional niche but not a need. Premium running shoes are a discretionary, replaceable purchase. A committed On runner values the specific CloudTec ride and the brand identity, and full-price sell-through plus rising DTC mix to 41.8% of 2025 sales show real pull and loyalty. But the competitive field is deep, with HOKA, Salomon, Nike, and others offering credible premium alternatives, so a disappearing On would leave runners disappointed rather than stranded. That places it above a fad brand but well below a true switching-cost monopoly.
The clearest evidence of pull is pricing behavior. On sustains a gross margin of 64.2% in Q1 2026 without promotional crutches, which shows customers will pay up rather than trade down. That is meaningful affection, but it is brand preference, not dependence; the further On leans on lifestyle and fashion-adjacent franchises, the more that affection is tied to staying culturally current rather than to irreplaceable utility.
On sustainability of the growth model, On scores well. Its growth comes from product innovation, premium positioning, channel mix, and geographic expansion, none of which relies on regulatory arbitrage, addictive mechanics, data exploitation, or externalizing harm. There is no obvious social-license fragility of the kind that hangs over tobacco, gambling, or certain platform businesses. Growth is earned through what customers willingly buy.
The one external sustainability risk is policy and supply concentration, not social harm. About 90% of shoes were sourced from Vietnam in 2025 and guidance embeds a 20% incremental U.S. tariff on Vietnam imports. That is a cost and resilience question that could pressure margins, but it does not make the growth model socially unsustainable. So the combined verdict is moderate indispensability plus clean, durable sustainability: customers would miss On but could replace it, and nothing about how it grows invites a regulatory or social backlash.