An new employee-based model for businesses:

[scribble]

4. A good start ...

but not every company needs resources in the same amounts. Some companies need more land or more capital, or more outside partnerships (example: sales people) than others do. Other companies need more customers or need to compete in a more volatile industry, or need to provide a very highly skilled service (medicine; high tech; law). These all change the nature of the problem you are trying to resolve.

These are not show-stoppers; just problems that an an economy comprising employee-owned companies would need to manage.