Dahveed doesn't get the point we are all trying to make here (and he keeps ignoring people's concerns with obvious smart-arse half dumb answers we all already understand!). Let me say again:
WE DO NOT WANT TO HAVE TO SIGN-IN FOR UPDATES ACROSS FAMILY MACHINES *EVER* – get it!
But hey, we have absolutely no option but to follow this separate AppleID accounts method now with the MAS.
The only consolation is that the software if actually slightly cheaper now, to slightly compensate — and I mean slightly...
In the UK, Snow Leopard on DVD was originally £25 (single), £40 (family pack; upto *5* machines).
But those 5 machines could all have and run their own AppleID's *separately*.
The saving through the MAS here is thus minimal; as now each AppleID holder in a family is going to have to buy Lion single's at an advertised £21 each. Do the maths:
5 x family machines using OLD family pack on disc = £40.
5 x family machines using NEW single's thru MAS = £105.
Your options are actually being *removed* here, as the only people who will save money are those users who run 5+ machines themselves under their own individual AppleID's (...and who really owns 5+ machines all themselves? 0.1% of users).
The underlying buzzword here, in this so-called new computing world we are entering, is "ecosystems" (as heard by many tech bosses at various tech shows recently, and the new buzz word for "platforms").
Which is marketing code for "closed walls", less interoperability between brands, and higher costs! (classic example being the new iMessage which is just for iOS, & perhaps Lion, ie. Apple only. Much like BBM is for Blackberry – hence the copying of the idea!)
It is being done by ALL the brands, because closed systems are easier to get working right, whereas completely open ones tend to be difficult to implement to get working in an accurate and similar comparable way across networks and different companies products.
There are many examples. Like the current eBooks mess —iBooks, Kindle, Nook, et al— all in *separate libraries* main reason being anti-piracy DRM wanted by publishers, so cannot be used in each others' products; bad for consumers. Hence why I don't use any of them. (Kindle apps across platforms does NOT sort this longterm, BTW!)
iWork is another example, being only usable on Apple (Office .doc import/export is a red herring - I've tested repeatedly before giving up using for this very reason: it simply doesn't work properly, ruining page layouts across all the 3 apps!).
Facebook's lack-of integration in various Apple products — FB want to do it alone, it seems, as they run API's themselves in the social-networking ecosystem they are creating for almost everything now or coming soon.
Did I mention iCloud and Apple Lossless (ALAC): Apple are even shoving their own lossless users to the wolves from the looks of it, as only iTMS AAC is gonna be allowed without paying a fortune - gee thanks Apple (as my whole collection is in ALAC)!
So get used to these closed walls "ecosystems" with only basic built-in integration, as it's the world we are (unfortunately) now entering. 😢