It's always worked. "Divide et impera" is a Latin phrase for a reason, it was how Philippus II of Macedonia described how he conquered a large part of current Greece.
and you aren't buying parts of their companies to share the wealth. sad. you can even get partial shares w/o commissions now.
When you buy a share of equity in a corporation that means you own m/nth of the company where n is the number of stock share issued, m is the shares of stock you own. Nothing is stopping you from being a shareholder except you wanna buy those fancy things. Read "The millionaire next door". We drive 10 y.o.Toyotas, shop at wal-mart, cut our own hair, and buy parts of businesses. You don't?