I work in this industry. I'm on the indexing side of it, not the ETF/fund side. We obviously have relationships with all the major fund providers, especially the three big names mentioned in the article. And I happen to work for the big dog - S&P. "Why? Partly because of two high barriers to entry: the huge scale enjoyed by the big indexers would be difficult to replicate by new entrants; and index fund prices (their…
I don't want to vote for each of the thousands of stocks I own indirectly through my index fund. I want Vanguard to vote on my behalf such that it proportionately replicates the votes of the non-index shareholders. This strategy is just an extension of the idea behind index funds in the first place: mirror the existing market.
Which is a dumb idea, of course, as that just leaves the control over your capital to your adversaries. Passive investing works because goals are aligned: The only way to influence an index fund on the investing side of things into doing something stupid is by doing something stupid yourself. If you want to make an S&P500 index fund buy some penny stock, you have to buy it yourself first in massive quantities paying massive prices for it to drive up the market cap. Voting does not work that way.