The last one of those was a strike, not a boycott. (Also, I don’t think that Irish government altered their import policy because of eleven striking workers at one store.)

Concerning the other two, the Nestlé boycott does not seem to have had much, if any, impact, and it’s at least debatable if the Nike one did much, and if it did, then the impact is not due to informed individuals “speaking with their wallet”, but the wide publicity.

This is why I specified “consumer-level”; a boycott which includes continuous publicity from major media is no longer consumer-level.