There was a time in the not-so-distant past when mutual funds were not highly regarded. They did provide the average investor with the opportunity to purchase their segment of the stock market with the guidance of a fund manager and comfort of knowing that others felt the same way you did. After all, they were giving this fund their money as well.
But not all investors were thrilled with the arrangement and in the day before the internet, the only way you could find out if your fund was charging too much for their services, was to dig. Not all of us were inclined to do so. We were average investors.