If you bought a computer with an os preinstalled, of course everything works on first boot. I haven't seen a lot of computers for sale with FreeBSD preinstalled though.
The last time I bought a computer with an OS preinstalled [a couple months ago], it threw all sorts of popups at me, flashed command prompts at me, doing all sorts of nasty stuff while stealing focus from the programs I was trying to use. And it couldn't find or install any OS updates. Hours and hours of scanning, and nothing would happen. Hours and hours spent googling, trying to manually install updates that supposedly fix the problem but cannot be installed...
