We should just remember that this is not their day job - they do this in what ever spare time they have.
Let's say some unforseen bug was introduced in the last patch which HAS to be fixed before they can open the server to the community. They probably have real jobs they have to go to. They can't just skip work, they can't work 24 hour shifts.
People (me included) have been complaining about this beta weekend - but I have started thinking (after some of the addiction has worn of
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Maybe they actually planned the beta / downtime in this peticular weekend because they actualy had some extra sparetime to put into their pet project? And what do they get in return for their hard work - complaints and tantrums from players, that don't have to do shit other than log in and get their fix.
Think about it - how would you feel? Motivated or dissapointed and not appreciated?