sentence: the following are a few examples of first-movers whose market share was subsequently eroded by second-movers : atari vs. nintendo ; apple 's newton pda vs. palm pilot pda ; charles stack online bookstore vs. amazon.com ; although the public was largely unaware of charles stack online bookstore and a compelling argument can be made that amazon has had much more success than the second-mover barnesandnoble.com second mover firms are sometimes called '' fast followers '' .