Frequency
Deloitte estimates the podcast ad insertion technology market currently represents $420M in annual revenue and is growing at 25% per year. Castwave believes it could capture 8% market share within four years if it enters now. If the market grows as projected and Castwave hits its share target, what is Castwave's implied revenue from this segment in year four? What share of Castwave's current total revenue does that represent?
Case Exhibit
Rounding is standard practice in case interviews and almost always permitted with a quick ask.
Step 1: Calculate market size in year four
Year 1: $420M x 1.25 = $525M.
Year 2: $525M x 1.25 = $656M.
Year 3: $656M x 1.25 = $820M.
Year 4: $820M x 1.25 = $1,025M.
Rounded: approximately $1B by year four.
Alternatively using the compound growth formula: $420M x (1.25)^4 = $420M x 2.44 = $1,025M.
Step 2: Calculate Castwave's revenue at 8% market share
$1,025M x 8% = $82,000,000.
Rounded: approximately $82M in year four revenue from podcast ad insertion.
Step 3: Calculate as a share of current Castwave revenue
$82M / $210M = 39% of current total revenue.
Step 4: Contextualize
An $82M revenue contribution from a new segment would represent a meaningful addition to Castwave's business, effectively adding nearly 40% to its current revenue base if the core business holds flat. However the 8% market share assumption in a market with established competitors is ambitious and warrants scrutiny. The more conservative scenario at 4 to 5% share still yields $40 to $50M, which is still material. The key question is what it costs to get there.
