You are assuming that the researchers at a name institution are necessarily better than those somewhere else. One of the most productive scientists in my field worked in a Polish pharmacy and did research on his own time. Prestigious journals including Nature have been forced to reveal that papers they have published were false. Certainly, there are far too many paper mill journals, but that is a symptom of the disease not the cause.
Academic researchers are judged on quantity rather than quality, because quality is easier to measure. However, quality is measurable (Science Citation Index for example), so that is no excuse. It is just laziness on the part of university administration and grant providers.