I know this question has been asked before but I am wondering when you look at a profitability case whether you think it makes more sense to take a top-down (existing operations, market dynamics, competition, etc.) or a bottom up (i.e. focus on key revenue/cost drivers and how to improve them.
For example a recent case I did was structured in the following way:
1. The owner of a movie theater wants to increase its profits by some arbitrary amount and has $50m to spend on theatre upgrades ONLY. What projects/areas should he focus on? Let's say they don't care if you increase revenues or decrease costs or both so long as profits go up and that the timeline is 1-2 years; furthermore, assume that the theatre is operating at or near full capacity in terms of tickets sold.
For a question like this I am unsure if it makes more sense to start at the bottom with specific revenue/cost drivers i.e. number of tickets sold x price per ticket, amount of food sold x average price per order, advertising revenue, etc. and looking at what factors drive the unit economics of it and then looking at the marginal cost to marginal revenue of various projects that would change these drivers.
OR
Start at the top and look at from a more “traditional” Customer, Company, Competition, etc. view where you would inquire about (i) Customer behavior (price sensitivity, what they value for when choosing what theatre to go to), (ii) Competitors (how they are performing, what type of services they offer, how they are adapting), and (iii) Company (what it currently offers, what revenue streams are growing fastest/most profitable, etc.)
Sorry for the long post but any advice would be appreciated.