This came about from the YTD software sales comparison topic.
What I am looking at is the software sales over hardware sales of the three home consoles and their change in time.
So first up let's see what we are looking at:
First up Monthly Software Sales:
followed by monthly Hardware sales:
Now we start to look at attach rate, to start with a graph which provides no real information Monthly SW over Monthly HW sales:
What this graph shows us is as we expected software sales are increasing faster than hardware sales.
EDIT: Now onto more interesting graphs, the current attach rate, that is monthly sales over total hardware. This gives us an indication of how software is selling to the existing user base:
Here we see that except for the inital start the three consoles actually follow very similiar sales patterns with an almost identical current attachment ratio.
UPDATE: updated till end of August 2010