While I have some serious questions about this model for business - mostly in that I do not think that all people are equal when you are talking business - perhaps (and I mostly agree with this) a good position for representative government, but even there you usually do not have literally "all people are equal".
Rather, in any democracy there is usually some minimums set around what a "person" is - i.e. usually a "citizen of the country", a "resident of the local area", above a certain age, having taken action to indicate an interest in participating (i.e. registering to vote).
Further, typically voting is a right, not a requirement, and as a right is something which the society can and does take away (i.e. in the US, people convicted of a felony often lose the right to vote as well).
Thus, even in politics it is not "all people are equal" - but rather, it is a group of people to which any particular individual may (or may not) belong, then within that group all people have the same number of votes (typically one on any given issue, though this is not the case in some methods of voting) and all votes are of the same type and value.
In the corporate world, for example, this is not always the case. Some stock holders can have different types of stock which grant different voting rights (or none at all in some cases).
Excerpted from Searching for the Moon