Ace, I agree with you about the intentions of agribusiness. But I would point out that unless you have found a hive of feral bees in a tree and moved them and their honey to your hive box, you are starting out with an artificial system. And even having bees in a box is not really natural either. It takes time to migrate your hive to more natural conditions. If I recall, you are a first year beek, so your bees haven't had a full year cycle yet. If that is the case, I think it would be reasonable to use foreign-derived cane sugar to get them through their first winter. After that, you can leave them with enough flower-derived honey to survive future winters.... but if they die this year, you will have to start over and will have made no progress toward natural.
We are having the same debate over ventilation. This winter, we are trying one long hive with an open SBB. It's a complicated issue. My instinct tells me that it makes more sense to restrict ventilation. But again, a hive box is not a tree. a hollow tree has thick walls and lots of top insulation. It's got to be less susceptible to condensation than a box with thin walls. It's true that moisture kills. The reason is that water has lot's more heat capacity (or in this case, cold capacity :-D) than air. Cold water dripping on a bee takes all the heat out of her immediately, and that is not a survivable situation. I don't know how to calculate the optimum rate of volume exchanges, so we will just have to try different amounts of ventilation and see what happens.