Depending on the Big 3

Today I was thinking about how much the Sox depend on Thome, Konerko and Dye to drive in runs, so I decided to take a look at how they stack up against other teams' three top RBI guys.  Looking at the numbers, I wonder if there any long-term implications of having such a dependence on these three.  The Sox are not in very good company at the top of that list.  In fact, there is a group of very solid teams whose "Big 3" are around the 40% range:

Team (Top 3)    Total RBI    Team Total      %
Tampa Bay          109          213      51.2%
LA Angels          109          223      48.9%
Chicago Sox        134          278      48.2%
Oakland            110          232      47.4%
Seattle            107          232      46.1%
Toronto            125          280      44.6%
Baltimore          109          263      41.4%
Boston             111          269      41.3%
Minnesota           95          231      41.1%
NY Yankees         123          304      40.5%
Detroit             99          255      38.8%
Texas              102          263      38.8%
Cleveland          110          290      37.9%
Kansas City         68          192      35.4%

Apologies for the formatting...it looks ok in the box but not when posted.