I think you're coming at this from the wrong angle, but the 2-year delay is really only applicable to users that want to compete, or in cases where the startup goes under or in a bad direction. For most users, the freedoms under Fair Source align pretty closely to Open Source, e.g. read, fork, modify, redistribute, etc. with the non-compete caveat. Users can absolutely use the latest version -- unless they're competing, but most users aren't competing and don't plan on competing.

The difference is that all users also eventually get the proprietary features, unlike an Open Core project under AGPL + commercial terms. I do think Fair Source is a better model than Open Core, at least in most cases, because of this alone. So I guess, would you rather: 1) never have the proprietary features, or 2) have 2-year old proprietary features? I know what I'd prefer, and from a simple continuity perspective, I know which is preferred by users.

Like I said, I'm not saying AGPL is bad. I just don't like how it's used in startup-land and I think there are better, more honest, options now.