High price in these kind of events rarely increases availability - after all, it takes time to increase production or ship more. If high price appears to increase availability, I suspect that's largely because you're pricing people out of the product. (A slight price increase to counterbalance the overheads of realigning supply lines might be reasonable, but whether that's significant compared to the normal profit margin - probably situational?)
As such, consumers are right to feel vindictive when companies do try and engage in that kind of profiteering; and that social dynamic is one of the ways to keep the market healthy when there are many more consumers than producers - effectively a kind of collective bargaining - at least, if the producer is sensitive to that kind of thing. Sometimes the profit will be worth it and they'll just shrug it off, of course.
But in particular, we should be careful not to support a narrative that empathizes with profiteering, because such empathy (absurd as it is anyhow for a corporation) undermines the shared social frustration needed for the implicit collective bargaining that's happening with these kind of social events. If everybody believes that it's just natural for a company to seek profit above all else, and crucially thus accepting that it's OK for them to screw over the consumer, then it's going to be hard to build momentum for any backlash, and thus hard to improve the negotiating position of the consumer.
Even from a radically capitalist standpoint that's bad, because capitalism works best (is most efficient) in transparent markets where all participants have equal power - and since that's never the reality, it's necessary to counterbalances against larger market participants, or those with more information.