Lemonade (NYSE: LMND) wowed investors earlier this month with a better-than-expected first-quarter earnings report that demonstrated solid growth along with progress toward profitability. Just days later, at the Berkshire Hathaway (NYSE: BRK.A)(NYSE: BRK.B) annual meeting, Ajit Jain, Warren Buffett's hand-picked manager of Berkshire Hathaway's insurance subsidiaries, made some comments that shed some light on why Lemonade may become unstoppable.