Because your question starts from a false premise. Just because a player doesn't want to meet others in game, either for a while or permanently, doesn't mean he isn't part of the community. To suggest otherwise is to say that there can be no community in non-MMO games, and to suggest that even in MMO games there can be no larger community that encompasses players of all servers and factions.
Your question, and the way you redefine community in an uncommonly narrow way, smacks of a "no true Scotsman" attack. Since you want to find a reason to exclude solo and group players from community content, you sought a way to redefine community to mean "every player except those that play in solo or open".
firstly this.... 'you sought a way to redefine community to mean "every player except those that play in solo or open"
i notice that you even quoted me...
at no point did i say that, and if you believe i did, then i question your mental process.
any points i made have related to the opinion i have which is that in order to retain the integrity of community goals,
i believe that they should only be available to those engaging in open mode.
most of the counter points i have read have rested on the defintion of the word 'community'
some have described their own group as a community, others have defined it as being everyone who plays ED.
personally i define it as those who are part of the MMO aspect of the game. its not beyond logic, or narrow to suggest that those who wish to depart
from the MMO in order to form their own private groups have actually seperated themselves from the community, in order to form their own.
and the idea of one person playing solo but engaged in community goals borders on madness imo.
imagine a football match with both teams playing at home!.
if i had set up a platform which had activities designed to bring a community together, only when it actually happened,
i found that people had ended up in seperate places having no contact with each other, i would feel that the exercise had failed.
if you take my way to its logical conclusion, you end up with a thriving community all in the same MMO instances
actually engaged in the event, taking the risks, reaping the rewards and quite likely meeting new people and making new friends.
if you take your way to its logical conclusion you end up with an empty arena with people playing behind closed doors having no contact with each other,
and an almost perverse defintion of what a community actually is.
to me, your defintion of community is narrow because it lacks the qualties one would usually associate with an actual community.
and so it comes back to where i started...., a private group, is an offshoot of the community.
it is NOT, the actual community. the ACTUAL community is the one you left before joining a private group
and that will remain the case no matter how much people try to argue against it.
the truth is, if it hadnt have been for the real community, you would never had made the decision to join a private group.
and as for the xbox thing....
i'm fairly sure that it wont even have a solo mode. dunno about groups though.