I read the book its based on (Losing the Signal) and saw the movie. Given the budget, in my opinion the movie is not bad. I found the first 10 minutes did not draw me in, but I found the rest of the movie more compelling. I agree with the reviewer that the actor playing Jim put on the best performance. But as this reviewer states, all of the actors are playing something of a caricature of the real people.

Personally, I didn't find either the book or the movie astoundingly insightful, and in my opinion both lacked a grounding in enough technical understanding to truly explain the market forces that were working against RIM. My full review of the book is here: https://www.observationalhazard.com/2018/09/book-review-losi...