Every company has the same attitude in my experience, this ins't unique to Amazon.
edit: For those down voting instead of just disagreeing provide a company and their policy. All the companies I've worked at have been the same as Amazon more or less and all my friends have similar employment clauses.
edit: For those down voting instead of just disagreeing provide a company and their policy. All the companies I've worked at have been the same as Amazon more or less and all my friends have similar employment clauses.