Sure. If they are paying $100M/y on hammers, it's at least worth running the numbers and investigate alternatives.
Strategically, you probably want to focus on what your core competencies are, even if you could in theory do something for cheaper. It's easy to ignore the foregone best alternative of iterating on your own product instead.
Sure. If they are paying $100M/y on hammers, it's at least worth running the numbers and investigate alternatives.