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We consider the effect of finite time extinction mechanisms (FTEM) such as(1) semi-linear harvesting terms, and (2) quasi-linear fast diffusion terms ontwo species Lokta-Volterra competition models. We show that these mechanismscan alter classical dynamics of competitive exclusion, and weak and strongcompetition by acting only on a \emph{small} portion of the weaker competitors'population, analogous to small defector populations in game theory \cite{DC23}.In particular, a stronger competitors population, with a few individualsdispersing (``defecting") very quickly, could exhibit bi-stability, as well ascompetitive exclusion \emph{reversal}. The non-linear harvesting is applied toaphid-soybean crop systems, wherein novel dynamics are observed. Applicationsto bio-control of invasive pests such as the soybean aphid are discussed.

The effect of "very fast" strategies on two species competition