By that logic, all bank tellers embezzle and banks are not safe. It is not, in fact, how the world works, and it is destructive to civilization.
I fail to see your analogy.
While it's entirely possible that Avalon not interested in profit at all, and that he's selling his ASIC product at or below cost, it doesn't seem that way.
If he's selling for a profit, then he is expecting to make at least *some* money on his endeavor. As gapthemind pointed out, he could make more money by running the miners himself than by selling them.
That said, there are a couple of factors involved. If he turns on all 300 of his batch, how would that affect difficulty? How many of his potential customers would drop out of the market because the profits have lowered? How long would it take for him to recoup his initial investment, as opposed to selling them outright?