BigCommerce vs Shopify: The B2B Enterprise SaaS Market Share Battle

Published: August 25, 2026 • Reading Time: 6 min read • Reporting: Intelligence Division

BigCommerce once stood as the premier public alternative to Shopify, leveraging its advanced B2B capabilities to capture mid-market enterprise accounts. However, recent market dynamics show a widening growth gap as Shopify successfully invades the enterprise B2B territory.

Six years ago, BigCommerce was positioned as the primary alternative to Shopify in the high-growth e-commerce platform space, appealing to public market investors seeking pure-play SaaS exposure. While BigCommerce leaned heavily into its native B2B capabilities and open-SaaS architecture to differentiate, it has increasingly struggled to match Shopify's massive scale and rapid feature velocity. This growth divergence highlights a critical reality in modern enterprise software: being the designated 'number two' player is a precarious position when the market leader successfully moves upmarket. As Shopify aggressively expands its enterprise B2B offering, BigCommerce faces compressing margins and slower-than-expected revenue growth, raising questions about its long-term viability as an independent public entity. The e-commerce SaaS landscape is consolidating, and niche technological advantages are no longer sufficient to offset the massive distribution advantages held by dominant platform players.