Well I dont have any projects (let alone side projects) that need a ToS. Ultimately those who start it will be those that benefit from having readable unambiguous ToS. Some benevolent company? A company that has been bitten my unenforceable ToS? A startup that doesn't want to complicate legal? ISO? EFF?

What stops me from contributing to that effort is at that I don't know (and dont really want to know) enough legal to know common variations of in ToS. Not to mention the wide range of fields that ToSes cover.