It is; however, my next understanding is this is why we are seeing a rise in meta-analysis papers. It is difficult to acquire a sufficient N with a single study. As a result, you see authors consolidating all of the papers within a topic and discussing the trends seen in each.

However, research also has issues with reproducibility. No one will publish work that was simply a repeat of someone else work. Researchers have to twist or add something. It is a discussed issue, but no one in power has made attempts to rectify it.