Magento vs Shopify Plus vs BigCommerce for mission-led / eco-sustainable DTC?

Honest cut, mission-led-specific:

Shopify Plus wins if: single-cert brand under $2M GMV, refill-sub scope is small (one product family), no take-back program, you’re comfortable with app stack ($300, $2k/mo) handling EcoCart + Recharge + a basic Klaviyo flow. Allbirds was on Shopify Plus for a long time. Who Gives a Crap still is.

BigCommerce wins if: you need decent B2B + DTC on one platform without enterprise pricing. Headless-friendly, cheaper than Shopify Plus, but the mission-led app ecosystem is thinner, no EcoCart-equivalent native, refill subs need custom work.

Magento wins if: multi-cert dashboard matters (B-Corp + Climate Neutral + Fair Trade renewal calendar), refill/circular workflow is non-trivial (Blueland-style SKU swap or Loop-style returnable container with deposit ledger), take-back program is in scope, full LCA per SKU disclosure, supply-chain transparency portal, multi-region with EU Green Claims Directive compliance. Patagonia and Grove Collaborative are both on Magento-stack architectures for this reason.

Mission-led brands typically outgrow Shopify around $5M GMV when refill subscriptions hit ~3k subscribers (Recharge starts struggling with custom SKU swap), or when take-back program redemption hits ~500/mo (Shopify RMA is thin). Migrate before the fire, not during.