I have serious doubts about Steam hardware capabilities. It took Microsoft 2 console generations to probably get it right hardware wise with the Xbox One.. Valve is a software company first and foremost, I expect "growing pains".. If Valve thinks OEM will take up the burden, I don't think anyone is going to invest significantly in developing custom hardware for the Steam Box until its proven itself. At best they will invest in using commodity components and assembly, selling at a high mark up, which will put the Steam Box at a disadvantage with traditional PCs which use the exact same commodity components.
I honestly don't think they are really going into the hardware market, but instead building a reference spec for OEMs and enthusiasts. I.E., "If you want to build a Steam Machine, you should meet <this> minimum spec to get <this> quality of experience". Part of that is offering a base model that represents what Valve sees as a Steam Machine of certain standard of quality. Kinda llike what Google does with its Nexus devices for showing off a good Android implementation. At least that is my interpretation.
On the "cream" question for americans. No, Americans dont actually use cream. "Cream" almost always refers to half-and-half (half cream, half milk), though the butter-fat content is lower than the name and mixture would imply.
I've actually switched from coffee to tea (black teas & green teas) as coffee left me feeling tired often later in the day with that feeling compounding after long use over the last few years.
Tea for me gives me a nice boost in the morning and doesnt drag me down later in the day. Also i habitually have a nice hot cup of green tea before bed. For me its very relaxing. Best way i've found to prepare tea was to take a Keurig coffee maker and use one of those re-usable mesh cups with the tea-leaves from a ripped open tea-bag. It makes a perfect cup every time and cleanup is easy.
There have been periods which for whatever reason i've temporarily switched back to coffee and re-discovered those negatives again and quicky switched back. Which is a shame because i'm one of the few people who love the rich deep taste of a well made black coffee, but then again, maybe thats what easily allowed me to switch to tea as a better replacement. Who knows?