There are several steps that companies can take to start building extensibility into their product roadmap:

• Identify the key areas where extensibility will be valuable: This can involve speaking with customers and stakeholders to understand their needs and pain points, and determining how extensibility can help to address these issues.
• Incorporate extensibility considerations into the product development process: This can involve designing modular, reusable components and building in hooks and APIs that allow for easy customization and integration.
• Create a plan for supporting and maintaining extensibility: This can include setting up a process for reviewing and approving third-party integrations, as well as providing ongoing support and resources for developers building on top of the product.
• Communicate the value of extensibility to customers and stakeholders: This can involve highlighting the benefits of extensibility in marketing materials and sales pitches, and working to educate users on how they can take advantage of the customization options available.

Overall, building extensibility into the product roadmap requires a focus on understanding the needs and goals of customers and stakeholders, and designing and developing the product with these considerations in mind.