I'm not convinced that J D Martinez is any greedier than any other big ticket free agent. The 7/210 numbers from Boras were ridiculous, but the MLBTR prediction was 6/150, and MLBTR has a solid track record with their predictions. Martinez, like many free agents this offseason, has been taken by surprise by how conservative MLB teams have suddenly become.
If this was a 'normal' offseason like we've come to expect, Martinez probably would have been signed by the Sox for around 6/150 a long time ago, had the introductory press conference with big smiles all around, and would be with the team in camp.