There really isn’t much of a “tablet” market
But no other device maker today can solve the software problem as well as Apple did.
Most of them are hardware companies relying on someone else — Google or Microsoft — for the majority (or the entirety) of the software.
Neither Google nor Microsoft will ever be able to tailor their software to other manufacturers’ specific (and varied) hardware devices as well as Apple can (and does) with theirs.
Marco points out crucial differences between Apple and others playing in the “tablet” market.
I highly recommend reading this article to better understand current situation in tablet market.
(Source: marco)