Strategy questions rarely fail because you can't size a market — they fail because you conflate 'this market is worth pursuing' with 'we can actually win it.' Exponent's latest Google Product Strategy Interview Guide includes a classic market-entry question: should Google enter the online furniture retail market. Today we break it down with Porter's Five Forces and TAM-SAM-SOM, using Zoom's fight into a market already locked down by Cisco WebEx and Skype as the case study — strategy questions ultimately hinge not on market size, but on whether you have an edge competitors can't copy.
Strategy questions don't test whether you can recite Porter's Five Forces — they test whether you can articulate a clear trade-off when you know you can't win on scale. Facing Google AI Overviews' 2 billion MAU and OpenAI Atlas, Perplexity chose to shut down its ad business entirely in early 2026 — a move that looks like self-inflicted revenue loss, but is exactly the kind of strategic coherence today's practice is about. Use TAM-SAM-SOM to frame the market, Five Forces to identify the battles you can't win, then answer 'What are you willing to sacrifice?'
Strategy interviews don't test whether you can recite Porter's Five Forces — they test whether you can make well-reasoned trade-offs with incomplete information and convince others. Today we practice market positioning analysis, moat assessment, roadmap prioritization defense, and stakeholder alignment communication.
A Product Builder isn't a traditional PM — you need to build from 0 to 1, not just write PRDs. Interviews test the intersection of product intuition, metrics thinking, technical understanding, and execution ability. Prep strategy: first figure out whether your target company wants a PM or a Builder, then allocate time across nine dimensions.
Strategy interviews don't test whether you can recite frameworks — they test whether you can make judgments with incomplete information. Core skills: market sizing (the practical use of TAM/SAM/SOM, not rote numbers), competitive moat analysis (network effects, switching costs, brand), go/no-go decisions for new markets, and using elimination rather than addition for strategic trade-offs.