Bogle steered many people away from the exploitation that is all too prevalent in the financial system by encouraging usage of index funds, and his legacy deserves praise for that.
Bogle’s great innovation was to minimize the cost of managing individual accounts. The key Vanguard asset is an index fund. It does minimal trading, it just tracks the market. Bogle argued, supported by much evidence, that the vast majority of investors are not going to beat the market. This means trading costs are simply a transfer to the folks running the account. Since most of us have people we would rather give money to than our stockbroker, we are better off just having an index fund.
And it does make a huge difference. Many of Vanguard’s index funds have costs of less than 0.1 percent annually. By contrast, many actively traded accounts will have fees and service charges in the range of 1–2 percent annually. This adds up over time. If you invested $1,000 that got a 6 percent nominal return, it would grow to $5,580 at Vanguard after 30 years. At a brokerage charging 1.0 percent in annua,l fees it would grow to $4,320. At a brokerage charging 2.0 percent annual fees, it would only grow to $3,240. And the gap is all money in the pockets of the financial industry.
While his low-cost index fund was a great innovation in finance, he did not personally get rich from it. He organized Vanguard as a cooperative. The people who invest with the company effectively own it.