So, you can only install one copy of Windows 7 on one machine at a time, and for a normal household of 3 or 4 computers you'd have to either buy the Home Premium family pack (useless - sabotages features like remote desktop with the limitations of the Home Premium distribution) or buy your preferred distribution 3 or 4 times. Learning this prompted me to reconsider the £170 I'd originally spent on Ultimate, and led me to ask: is Microsoft's pricing of Windows proportionate? Either there is a monstrous amount of labour hours going into the development of each new version, or the pricing (which has always been quite high for all versions of Windows) is exploitative. Put another way, is the retail price of Windows mostly compensation or mostly profit? When I think how much the combined sales of Windows must amount to, it seems incredible. But then I have no idea how many people work on each version, or how long they work on it for.