You pay market price for oxygen. It just happens to be 0 right now. There isn't any reason in principle that price can't change (eg, if you want to go underwater getting the oxygen will most certainly cost you something, if you want your air at a certain temperature or humidity that costs you too). If we set up a moonbase or something then it might well be that oxygen would cost something.
Much like how there isn't any reason you have to pay for food in principle. It could become so cheap and easy to produce, say, bread or cheese that it is available everywhere at no nominal cost.
So yes, you should. You already do, realistically.
It isn't just that I agree, but that I just wrote long - excessively verbose, I thought - posts upthread and downthread explaining how I expect the situation would play out, how it would affect me and how I'd respond to it. What more do you want from me?
It's a fact that, right now, the dude can use whatever amount of air he feels is appropriate for his circumstances. Even if I wanted to interfere I doubt I'm even on the same continent as he is, and it isn't my business anyway.
I suppose I'll just add in postscript; your not going to get much out of the conversation if you don't take it seriously. There are people who make great money selling oxygen. It isn't automatically priced at $0. In some hypothetical world where quality oxygen wasn't just floating around in the atmosphere, people would pay for it in the same way they pay for other essentials like food or water. Paying for water is about as crazy as paying for oxygen, they both basically just turn up out of the atmosphere. And there is precedent for a commons essential good becoming more expensive, food used to be something people just picked up off the ground for free. Or hunted down on unclaimed land.
