Zone A on SoT is pretty much the easiest zone to camp, since there's only 3 possible entrances. If you and one or two others set up shop there you *could* theoretically hold it for the entire match.
Besides, if you spawn there anyway what exactly is the problem?
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Because you'll spawn in A-cave/ruins, so far from the usually critical battle at B. And there are only choke points through which to get there. You can hold A the entire match, because so few people will attempt to cap it, much less fight for. Happy camping.