WordPress is flexible for content-rich business websites and WooCommerce stores. Shopify can simplify ecommerce operations with a hosted platform, while custom development is useful when the project has workflows or integrations that standard systems cannot handle well.
What to consider
Consider who will update content, how products are managed, which integrations are required and how much technical ownership the business wants. Platform popularity alone should not decide the architecture.
The best choice is the simplest platform that can meet current requirements and support expected growth without creating unnecessary complexity.