They aren't gonna lose significant market share over 4" phones. That ship has sailed. And the ones that they do lose are pretty much equivalent to the share they loss from not having a removable battery.Absolutely understandable...but this is something that exists right now in the iPhone line and is potentially a way to prevent Apple from losing a certain market segment to the first company smart enough to make a flagship 4" phone. Remember what Apple has said about cannibalizing its own sales because this is absolutely a place that it can apply.
As far as the Rolling Stones having a song about it, they've got at least one or two for each perspective.