I think 'eating' into may be mischaracterizing things. A decrease in Apple's profit share when total profits are increasing doesn't necessarily mean Samsung is taking anything away from Apple.
It's entirely likely that Samsung is simply dominating the formerly-fractured not-Apple side of the market, consolidating sales under its masthead and, unlike RIM, HTC, et al is doing so profitably.
Given that Android device sales were growing incredibly rapidly during a time when no manufacturer was making much profit on them, I think Apple's profit share has been overstated for some time. It was only a matter of time until someone figured out how to make money selling to the slice of the market that Apple ignores.
It's entirely likely that Samsung is simply dominating the formerly-fractured not-Apple side of the market, consolidating sales under its masthead and, unlike RIM, HTC, et al is doing so profitably.
Given that Android device sales were growing incredibly rapidly during a time when no manufacturer was making much profit on them, I think Apple's profit share has been overstated for some time. It was only a matter of time until someone figured out how to make money selling to the slice of the market that Apple ignores.