A. Every venture capitalist will tell you that the best startup pitches focus more on the problem than on the solution.
Framing the problem you solve in just one sentence is a great discipline and one that most businesses have never practiced, which is why the ones that do succeed.
Some examples:
Warby Parker—Why do glasses cost as much as an iPhone?
Mint—‘You spend the majority of your life working for your money, but do you know how your money works for you?’
Uber—Why can’t I just push a button and get a ride?
PFwise - Shouldn't personal finance be personal and number-based?
What's Your Single Sentence Problem?