And not just S&P, also FTSE Russell: https://www.bloomberg.com/news/articles/2017-07-27/index-pla...

This is a big deal (in a good way, IMO). Companies have a very real disincentive to go public with a shareholder-rights-unfriendly listing now, since a large portion of the passive investment universe will be prohibited from ever buying.

I see this as a case where everybody wins: the default option ends up being friendly to shareholder rights, but if you really want to and are in an advantageous position you still have the option to list go public with non-voting/less-voting shares if you want to gamble.