I guess he is pointing out that - Although Andriod is gaining market share, it isn't exactly eating into potential RIM market share. Other way to put it is that both RIM and Android target different set of customers.
P.S :- I am not making the above assertion. Just writing what i understood from reading that article.
Sorry for the confusion. What I was trying to say was that I think neither the rise of Android nor bad marketing are likely to be the death of RIM. They may well be damaging, but in my opinion they are a sideshow compared to the central problems.
Android is obviously an important competitor to everybody else in the mobile market, but in my opinion the market is heavily segmented, so it's possible for several companies to grow simultaneously.
And RIM's products sold well for years despite the company's lame marketing. Yes, Apple has raised the bar on smartphone marketing, but if (as BusinessWeek implied) you have to out-market Apple in order to succeed in smartphones, everyone else ought to pack up and quit now.
P.S :- I am not making the above assertion. Just writing what i understood from reading that article.