Re: Office 2010 business | 1 user, 2 pc's ????????
I can't really say why the Home and Student Package has 3, but I would assume it's for the simple idea that most people have, at most, 3 PC's in their home.
The whole business part is simple.
Microsoft allows a business to install the Office suite on two PC's for the same User. This is needed if the same user has a desktop + laptop setup. The business only needs to use a single CAL (Client Access License) for a single user to use the same key on all possible business PC's. A working man/woman would have no need for two desktops with Office on it. In that rare occasion, an additional license is required.
The only time a business user can extend that CAL is if the organization has an ELA (Enterprise License Agreement... or Volume Licensing in Microsoft Land). When the organization has this, then the employee can use the Office package on two office PC's, as well as install the package on a home PC under the same license key.
Looking at your examples above.
First, Microsoft doesn't make their money from students or old ladies. They make their money from businesses and government. Windows XP was designed specifically for the government... not Joe the plumber.
Microsoft products and the licensing for those products are usually 1 to 1. 1 user, [x of 1 users] PC's (again driven from the gov/biz target consumer). Keep in mind though, Windows was not designed to support the user limitation. If you install Office 20xx on a Windows PC, you can't setup a key for each profile. The same installation works on all profiles and is considered as compliant. This was not done by accident. The whole 1 user 3 PC limitation is set forth to protect from piracy, not to destroy people's lives through litigation. If you have Office on your home computer and you, your wife, your 3 kids and the stray cat all use the product, they could really care less. Don't get too caught up on the user limitations. The number of machines that the key is limited to is the more important term.
Humans are the only creatures that won't live up to the their potential. Give everything your all. When you die, die on E.
So I ask you, what do you intend to do now?