I think the tech industry was, at least for a while, an exception here. Developers were so hard to get and retain that the power of individual workers did a lot to keep things sane. But I think that power is, for a variety of reasons, waning. If we want to keep our unusually good working conditions, and especially if we want to make sure our colleagues enjoy them as well, then I think collective action is going to become more and more necessary.
(For those wondering why, a key part is the intrinsic size difference. It's much easier to lose one employee than to lose your full-time job. This inherent power imbalance is easily exploited.)
For the next thing I start, I've been looking into worker- and member-owned co-op structures. It turns out some of my favorite businesses are run that way, from my local bakery (Arizmendi) to my favorite outdoor goods company, REI. My explorations are early yet, but I'm seeing a lot to be optimistic about. I think it's possible to combine the discipline of a value-for-money business with the mission orientation of a not-for-profit. For example, imagine if WhatsApp had been a worker- or member-owned co-op. If instead of selling to Facebook, they'd just kept making the thing they thought the world needed.
If this resonates with people, feel free to contact me on email or Twitter. Maybe we can get a mailing list together for further discussion.