Great read, highly recommend.
Employee ownership is not a silver bullet to every problem. The governance model and governing body of employee-owners has to be well constructed as with anything. As a philosophy generally, it has a lot of potential to avoid certain common problems with more traditional business models.
In this space it's also important to understand the difference between cooperatives and collectives: https://institute.coop/about-worker-co-ops/worker-cooperativ...
Credit Unions tend to be a more commonplace example of member/worker governance, though in my experience it's somewhat rare for the average member to engage much with the governance.
It should be said that Sara [1] was also the founder of the Freelancers Union [2], offering solo benefits and other resources to freelancers.
The book is great because it's so practical, with 3 org design principles [3]:
[1] A solidaristic community [2] An economic mechanism that supports the community's mission [3] A long-term time horizon where the economic value is recycled back to the community
I think part of the reason people assume it's not possible is that (at least in the UK) there is so much faux-consultation which has approximately no effect; both in the public and private sector. But it looks superficially like the same thing.