Yes, worker cooperatives have formed and functioned in the existing economy. Which is part of how we know using them as the foundation of our economy, rather than a niche aspect of it, could work.

> But lenders won't lend without a high expected ROI.

Exactly, that's what's stopping them. Worker cooperatives don't provide the return on investment that investor ownership grants. They don't allow those with capital (wealth) to demand a large portion of the returns from the business. That's what requires the new economy - removing the option for capital to demand ownership and control so that it has to make do with a reasonable, regulated return on its loans.

This is an unrealistic fantasy. Capital owners don't lend money to businesses just for fun. You haven't proposed a viable way to encourage lending. If they can't achieve a high expected ROI on business lending then they'll use their capital for other purposes.

> Which is part of how we know using them as the foundation of our economy, rather than a niche aspect of it, could work.

We don't use worker cooperatives in the same way we don't use corporations. There is no overarching entity that uses any of these things.

If worker cooperatives are so great, they should be outpacing corporations. Some do. For example, companies like Winco and Mondragon exceed productivity of their corporate counterparts. That's fine. More power to them. Their story should encourage others to start worker cooperatives.