At many places I've worked, there are essentially zero checks-and-balances between "Exec gets randomly excited about X" and "X becomes a mandate, with staffing, budget, and deadline." No technical vetting, feedback loop, sometimes no apparent coordination with other execs (and their random ideas). It's just: "Mike is excited about Cloud. -> We are now doing Cloud." Later, Mike gets excited about something else, and the entire team moves over to something else. "Mike is excited about AI. -> We are now doing AI."