Because it would then be pronounced IKE-Oh.
Also, the A is short for Agunnaryd, the founder's hometown. (IK is his initials, Ingvar Kamprad, and E is for Elmtaryd, his family farm.)
The A can still stand for Agunnaryd and the circle at the top can be the midnight sun, which embodies the sprit of Sweden
The A can still stand for Agunnaryd and the circle at the top can be the midnight sun, which embodies the sprit of Sweden