Thanks for your comment, Niraj. The best way to avoid that sales--or another group--hijacks strategic decisions is to involve representatives like sales reps in creating and evolving the strategy, as I explain in my book Strategize.

When you apply the stack, capture the product vision together with the product strategy, as it's done on my Product Vision Board:

https://www.romanpichler.com/blog/the-product-vision-board/

I hope this helps!