I can get Office 2013 for $10 thru MS's eHUP program but chose not to. we have had my wife's andriod phone for 2 years but in the last year I started using Google Drive and their office docs plus i have a skydrive account. I see no need to pay for a subscription and Office 2010 has everything i need for home use that google Drive and SkyDrive do not.
Thats awesome and i'm glad there's a solution that exactly meets your needs, you're not their target customer though.
Home user sales of Office are small potatoes, and the Home and Student (no outlook) edition is already deeply discounted. This is all about the Home and Business and above because it includes Outlook, the de-facto email client for businesses small and large. The big money they're after is getting small and medium businesses to steer clear of buying retail licenses for Office and get them on the Office365 subscription model with business agreements. The more businesses that hop on board, the less focus Microsoft needs to spend supporting legacy software in business and enterprise environments, and the more money they make from contract licensing without retail outlets taking their cut.
There will always be retail and OEM licensing available for those home users who need or want Office, but they are by far the market segment Microsoft cares the least about on this one.
From a small business standpoint, $8/mo/user for everything Office365 comes with is a fantastic solution compared to system-locked $300 retail licenses. By the time your typical PC refresh cycle/warranty expiry is up, you're saving money over retail license or big-ticket enterprise licensing and you're getting way more features, support, and the benefit of no exchange server for your IT department to stress about.
The system locking is just one further push convincing small/medium business IT that migrating to Office365 subscriptions instead of managing traditional Office licensing is a smart move.