See Embrace, Extend, Extinguish. While Facebook and Google are dabbling in this behavior, Microsoft was the master of it. https://en.wikipedia.org/wiki/Embrac

See Embrace, Extend, Extinguish. While Facebook and Google are dabbling in this behavior, Microsoft was the master of it. https://en.wikipedia.org/wiki/Embrace%2C_extend_and_extinguish https://en.wikipedia.org/wiki/Embrace%2C_extend_and_extingui... https://en.wikipedia.org/wiki/Halloween_documents https://en.wikipedia.org/wiki/Halloween_documents