It's not three instances, it's three seperarate applications.
Nope,as I understood,I read that would be one application,as well as 3 open windows(three processes) in Firefox are counted as one app.
I believe that all "instances" as you said,would be part of just one app,and that would be Microsoft Office,or some other "office" variation.
IMHO,whoever buys netbook,buys it because he needs it as second computer for work(I dont mean office work) or something,and it doesn't need to be some high-end PC capable running Assasins Creed or Call of Duty 5 in online multiplayer mode.In fact,three apps will be way too much beacuse that "thing" will not even be "on" most of the time.
I believe that whoever buys netbook,buys it because mobile phone(iPhone,for example) is just a bit too weak and netbook has a quite enough big display,quite respectable HDD and it is ALMOST computer.If netbook would be capable for receiving phone calls,it would be almost perfect competitor in iPhone category.
So what do you expect from ALMOST computer?If netbook is suitable for somebody's needs,Windows 7 Starter edition would cover his needs too.Everyone should just try to think about Compaq Handheld PCs,and Windows CE what they were running in time of Windows 98,and XP beginnings.That was netbook of that time,quite enogh.
And if someone bought netbook just becuse it is much cheaper then laptop(and netbook performances seems quite good this days),but in fact needs laptop,and for them who are trying to use netbook as laptop,Windows 7 Starter Edition wont be enough,and it's time to start thinking about buying a laptop instead of netbook.
I believe that regular price of Starter Edition wont be more then 60-70$,and that is not too much to pay for one stable OS,scheduled to run on computers that do things for what are prepared to do,and one would be a lunatic if NOT install Win7 Starter Edition,rather then trying to make a laptop on basis of netbook,or to f***ing around with some opensource OS.We have to admit that Windows is the best solution for everyday nonspecialized use,and for "ordinary" people,the easiest way .
In that purpose,Windows 7 Starter Edition is quite enough.