Risk. People were complaining about the risk involved with a Pujols, Cespedes, Darvish, and Prince, but there's far, far more risk involved in signing a 30 year old pitcher with a bunch of mileage than any of the players who got big contracts this offseason. I wouldn't necessarily be opposed to signing a couple of high-end FA starters, but I'd be much more wary about that than I was this past offseason about signing offensive stars. Especially since there's not a glut of FA starters available like people thought there would be a few months ago - now it looks like there might be, at most, 3 top end starters available (Hamels/Greinke/Anibal) and I still think Hamels will end up getting a new contract with Philly before FA. With just 2-3 on the market and the possibility/likelihood that the Yankees, Tigers, and Red Sox will all be in the market for starting pitching, we could easily be looking at ridiculous contracts for them.