XMarks is a classic example -- in 2010 they announced that they would be shutting down because their user base (2m mau or so?) did not bring in revenue to suppo

XMarks is a classic example -- in 2010 they announced that they would be shutting down because their user base (2m mau or so?) did not bring in revenue to support operations. In the aftermath of the announcement they sold, presumably at a fire sale price.