If you clearly understand the needs of product stakeholders and involve them in the process of creating marketing strategy, you won't have to regain lost trust. But still, new strategic directions are somewhat hard to 'sell' to the rest of the organization. Explaining strategy rarely moves minds. If it's a big scary bold move, then look for ways to test the strategy in a small environment, like with one region or territory. You can tell people about the strategy and your assumptions, or you and show them with tests and results. Most major wins in strategy are uncomfortable to organizations - the status quo always seems safer, even if it is not working. So confidence, faith and leadership are required to execute a new strategy.

Shifting your product marketing strategy doesn’t automatically erode stakeholder trust if you’re transparent and data-driven. In my experience, regularly communicating updates and basing changes on data ensures stakeholders understand why adjustments are made. However, if it’s a significant shift, it’s essential to present a clear rationale backed by data, set expectations for results, and offer transparency throughout the process. Trust is maintained by demonstrating that the shift is necessary for growth and aligned with long-term goals, reinforced by evidence and regular progress updates.

Shifting a product marketing strategy can create uncertainty, but regaining trust with stakeholders starts with transparency. Clearly communicate why the shift was necessary, backed by data and market insights. Show how the new direction aligns with business goals and creates opportunities for growth. Involve stakeholders in the process, keeping them informed of key milestones and early results. The key is to demonstrate that the change is not just reactive, but strategic. Trust is earned by consistently proving that the new strategy delivers value and drives measurable progress.

This question assumes that a shift in product marketing strategy will erode trust with stakeholders. That is debatable due to the constant need to adapt product marketing strategy anyway, so this is perhaps more a general question on how to effectively manage change, than specific to product marketing strategy. There is a great book by John Kotter on leading change that I would recommend

The market is fluctuating, and unless you're in North Korea or russia, stakeholders are accustomed to strategic shifts. It’s better to adapt in time. 1. Explain the reasons. Ensure you have solid data to support the change. 2. Keep them informed. Regular updates promote transparency and strengthen trust.