@FoxKat, your posts definitely made my day -- thanks for elaborating. At one point I was struggling to remember what I'd learned from my one and only microeconomics course a lifetime ago, but your explanation brought it all back.
At the risk of sounding like I'm disagreeing, though, I want to chip away just a little at your notion of "subsidy." It seems that you're aiming toward the idea that, bottom line, a subsidy is a net cost for a company. It is a gain for the customer/client/user, offered at a loss by the seller. But I can think of two scenarios where that might not be the case.
The first is a very simple scenario -- I call it the "drug dealer on the corner." The metaphor here is that he offers you a free sample or two, hooks you, and you become a loyal, devoted, perhaps addicted customer. You always have the "freedom" to stop consuming, but you "choose" not to do so. In this scenario, the so-called subsidy is equivalent to the Black Friday "loss leader": "if I can get you in the door, even at the risk of losing on a subset of transactions, overall my profits will be higher."
The second scenario is a little more complex. The idea is this: when I have a 2-year, subsidized phone contract, I get a new phone (or I used to!) every 2 years for $100 (or whatever). I think, "HOLY COW, I got this $700 phone for $100." But I didn't. The other $600 is baked into the monthly amount I'll pay on my contract, hidden in a variety of places (including the monthly data charge). So, I might say to myself, "Yeah, yeah, OK so I realize the other $600 is baked in over 2 years. BUT I'M GETTING IT INTEREST FREE!" That too is unlikely logic, business-wise. I could easily imagine that the cell-phone provider, knowing their actual costs, has set the monthly contract amount in a way that if the customer could actually partition out the part devoted to paying for the phone, it would end up being $600+interest (or see Scenario 1 above, i.e., "take a loss on the hardware, make a killing on the data+minutes"). I won't labor the point (and I'm making it crudely) but the idea here is that the remaining cost of the phone is not only distributed throughout the contract, it is probably done so with a profit. I don't think it would take much tinkering to update this thought-experiment for an Edge-like "you're paying 0%" scenario -- the outcome is the same. Just because my contract says "net monthly cost of phone = total-cost-of-phone/24-months" doesn't mean that's what I'm actually paying.
So yeah, I think that subsidies can often be construed as short-term investments for an organization that come with anticipated long-term gains. It's a cynical view, but I see them as a shrewd business tactic (even things like welfare, farm subsidies, social security, and other so-called "liberal" assistance programs), not as a form of aid or assistance, and certainly not as an altruistic act.
-Matt