They are building things at the major league level just not in the way people want. As I said before, the lack of talent from 2002-2010 left their upper minors pretty devoid of players. People obviously made snide comments when trades like Feldman for Arrieta and Strop happened because they saw a failed played. But the thing they were missing is the cubs had to not only build their young minors but also had to build a group of players they should have had from those 2002-2010 drafts that eventually would have elevated to the MLB level. That's why you have seen a lot of "lightning in a bottle" hopes.
Seriously, look at the 2012 Iowa cubs.
C - Steve Clevenger, Anthony Recker, Juan Apodaca, Castillo(176 ABs), Blake Lalli, Brian Esposito
1B - Rizzo(257 ABs), Greg Rohan, Blake Lalli
2B - Gioskar Amaya, Adrian cardenas, Nate Samson, Alfredo Amezaga, Diory Hernandez
SS - Valbuena(211 ABs), Amezaga, Mat Tolbert
3B - Vitters, Greg Rohan, Diory Hernandez
OF - Jim Adduci, Ty Wright, Edgar Gonzalez, Nate Samson, Tony Campana, Jeff Frazier, Dave Sappelt, Brett Jackson, Jonathan Mota, Blake Dewitt
SP - Rusin, Rodrigo Lopez, Brooks Raley, Frankie De La Cruz, Chris Volstad, Casey Coleman, Jay Jackson, Randy Wells, Ryan Rowland-Smith, Wood, Tyrelle Harris, Yoanner Negrin, Horacio Ramirez, Seth Mcclung, Esmailin Caridada
RP - Alfredo Amezaga, Marmol, Jonathan Mota, Ryan Searle, Jario Asencio, Rafael Dolis, Michael Bowden, Scott Maine, Blake Parker, Jeff Beliveau, Manuel Corpas, Alberto Cabrera, Miguel Socolovich, Frank Batista, Brian Esposito, Jaye Chapman, Mike Macdougal, Nate Robertso, Marcus Hatley, Juan Apodaca, Blake Lalli, Shane Lindsay, Dan Berlind
And let's not stop there. Here's the 2012 Smokies
C - Juan Apodaca, Michael Brenly, Luis Flores, Chad Noble
1B - Justin Bour
2B - Logan Watkins, Nate Samson, Dustin Harrington, Elliott Soto
SS - Junior Lake
3B - Jonathan Mota, Lake, Samson, Matthew Cerda, Greg Rohan, Dustin Harrington,
OF - Ty Wright, Jim Adduci, Jonathan Mota, Jae-Hoon Ha, Rubi Silva, Michael Burgress, Matt Szczur, Nelson Perez, Rebel Riding
SP - Dallas Beeler, Nick Struck, Dae-Eun Rhee, Eric Jokisch, Trey Mcnutt, Brooks Raley, Austin Kirk, Lendry Castilo, Tyrelle Haris, Jeffery Antigua, Ryan Searle, Casey Harmen, Jake Bringham, Rusin, Yoanner Negrin, Rosscup
RP - Rafel Dolis, Jaye Chapman, Jonathan Mota, Scott Weismann, Dustin harrington, Joseph Zeller, Frank Batista, Alberto Cabrera, Brian Schlitter, Marcus Hatley, Tony Zych, Kevin Rhoderick, Casey Weather, Nate Samson, Dan Berlind
Yeah those teams were THAT bad. The depth was absolute shit and getting players at those levels are typically failed players for other teams unless you sell off major players.