At this point I still think they remember that, not to mention their shareholders.

This means those payments not subject to SECA tax and—provided the shareholder material participates in the business—they are not considered passive income.Thus, an S corporation can do some tax planning that can not be accomplished in a typical LLC.

Just as a strategic plan for a business is supposed to maximize long-term shareholder value, a career plan for an individual is supposed to maximize lifelong personal satisfaction.

I have had to add a shareholder into one company and set up a separate tax ID#, bank accounts, credit cards, insurance, and file state and federal tax returns.

These are all helpful in running a business but also to protect you personally (and your partners/shareholders) in the event of a lawsuit. 

As in, we need 20,000-30,000 more, I just don’t know how to manage so many share holders.

is the "A" shareholders' money an asset?

Investors/shareholders are relatively conservative and we guarantee them a 7% annual return rate (ie: the minimal net ROI we need to achieve).

The big companies report to shareholders who ultimately only care about profitability. 

When you buy into a co-op, you become a shareholder in a corporation that owns the property.