IMO, because the "tournament" of evolution between competing species comes to place where "winners" are declared, they live. Losers die off. While lamentable, t

IMO, because the "tournament" of evolution between competing species comes to place where "winners" are declared, they live. Losers die off. While lamentable, this opens the field for the next round of competitors to fill the voids left by the losers which drives more diversity and the process repeats itself.