I'm going to respond to this post, because it's the most rational-sounding one. Better than the guy spouting hyperbole and saying I have pieces of my brain missing.

It was my intention to make clear that Blizzard is NOT above criticism for the issues that occurred. It is obviously true that these issues happened on Blizzard's watch, and the way they played out is in large part due to the decisions that Blizzard has made.

But my rational analysis still expects launch issues. Sure, Blizzard could probably throw billions more dollars into server architecture and ensure that they never have launch-day load issues ever again, but that simply doesn't make business sense. Ignoring the point that you can't simply throw money at a problem and expect it to go away, it is also important to note that launch day is ALWAYS going to get huge spikes in traffic, and we're not going to see their like again until we get another expansion. Thus, it's simply a bad business decision for them to buy 10x as many servers as they use on a regular basis in order to hold the load that appears once every few months (when you're talking about patches) or years (for full games/expansions).

I'll note again that what annoyed me was not that people were frustrated. I know very well the frustration of anticipating something great only to have it pushed back by delays. I've shared it at release after release. What annoys me is when people go online and spout hyperbole about Blizzard not caring about its customers or somehow having something against the people buying their products. Criticism is an important part of the iterative design process, but much of what happened on Reddit was far closer to noise than signal.

Edit: The fact that this got downvoted and not replied to makes me sad. I guess that's what I get for trying to have a discussion on r/gaming.