There is nothing inherently wrong with a "big" business. There is something very wrong with an any-size business committing illegal activities or engaging in corrupt practices. But, these things are not intrinsically linked. For instance, how long then, would you root for the "good practice" underdog? Until your patronage causes them to become successful and grow? And then, do this company's "good practices" automatically disappear, because they have become "big" and therefore, "bad"?