I am not too concerned about this – though I do think it's a valid concern considering the actions of other players in the space.
Sitting here in Seattle I see Amazon hoovering up all the local talent they can hire. And I see them putting up new tower after new tower to house them. I don't worry about them stretching themselves too thin as far as manpower goes.
And they don't have a history of closing down AWS products – for instance the first, (and not a runaway hit) Mechanical Turk is still with us.
Mturk is heavily used internally and in academia for a crazy variety of stuff. It's not S3, but it's hugely important for the people it serves; it would be incredibly foolish to shut it down.
Sitting here in Seattle I see Amazon hoovering up all the local talent they can hire. And I see them putting up new tower after new tower to house them. I don't worry about them stretching themselves too thin as far as manpower goes.
And they don't have a history of closing down AWS products – for instance the first, (and not a runaway hit) Mechanical Turk is still with us.