*Disclaimer - the above is a theoretical thought exercise of cause and potential effect - I am in no way affiliated with either Anonymous or the Zeta Cartel, nor do I support bloodshed or potential new clusterfucks^h^h^h^h^h^h^h^h wars.
They should be selling the 64-bit version. They should be preinstalling the 64-bit version. People *shouldn't* be using the 32-bit version, becuase there's still a very real architectural limitation in the 32-bit version: a given process can only see 3 GB of memory, no matter how you set up your licensing.
There is one very real exception to this rule, in the current market: the netbook. Netbooks tend to have less than 2GB (or only 1GB if Windows is installed - once again MS licensing greed) and the Atom is currently a 32-bit processor if I'm not mistaken. Could be wrong, but even so netbooks and people who specifically *need* 32-bit should be the only ones buying it. Almost all new computers being sold have 64-bit processors regardless of memory installed - why preinstall 32?