At least in the one example you gave, 'blindness' is a terrible way to describe how hackers avoid it "fixing payment processing" is not a problem that we subco

At least in the one example you gave, 'blindness' is a terrible way to describe how hackers avoid it "fixing payment processing" is not a problem that we subconsciously avoid — but rather one that we very deliberately stay as far away from as possible. Is there a more inglorious class of failed internet startups?