Growth trajectory: Shopify at 25%+ versus Block at 15% (ex-Bitcoin). Clear advantage Shopify. The commerce platform model with rising take rates has more structural growth ahead than Block's mature payment processing business.
Profitability: Shopify reached $1.3 billion in net income in FY2025 — a dramatic improvement from the losses of 2022-2023. Block's net income of $0.27 billion in FY2025 is thin for a $24 billion revenue company, reflecting ongoing investment in Cash App and Bitcoin infrastructure. Advantage Shopify by a wide margin.
Competitive moat: Shopify's merchant switching costs are high — migrating an online store with product catalogues, customer data, and integrated apps is painful. Block's payment processing has lower switching costs — a merchant can swap Square for another terminal relatively easily. Advantage Shopify.
TAM expansion: Shopify is pushing into B2B commerce, enterprise, and international markets. Block is expanding Cash App into lending, savings, and tax filing. Both have large expansion opportunities, but Shopify's commerce infrastructure TAM ($800 billion+ globally) exceeds Block's fintech TAM ($300-400 billion in the US). Slight advantage Shopify.
Valuation: Shopify at $115 billion (12x forward revenue) versus Block at $30 billion (roughly 4x forward revenue adjusted for Bitcoin). Block is dramatically cheaper. But cheaper doesn't mean better value — it often reflects the market correctly pricing lower growth and weaker unit economics.