CoreWeave's business model is fantastic, but there's one major flaw.CoreWeave (CRWV 2.06%) has taken its investors on a roller-coaster ride in 2025. After a fairly lackluster IPO, its stock stayed flat for a month or so before spiking. It reached a return as high as 359% before peaking, and has slowly tumbled back to today's stock price. It's still up over 100% from its IPO price, marking a successful investment. However, I think it could double in 2026 if it does just one thing. This task won't be easy, bu ...