No student in their right mind would ever want to go to an outside source and request them to help them with an assignment, unless it was a last resort. Most people fail to understand that our students are honestly helpless if their institutional faculty does not help them or does not teach them well and instead keeps overloading them with assignments.
There was a time when teachers and professors were so dedicated to their jobs that they would spend hours trying to explain the topics to their students. Nowadays, you would barely see any teacher that is willing to give their time to the students, let alone impart some extra knowledge even during the class timings.
This is prevalent especially in the subcontinent, where teachers instead encourage students to join their own tuition centres for better exam prep. Even students who do not nail from upper class backgrounds may choose to buy assignment rather than see themselves failing the whole semester.