How many of those obvious failure MMOs are shut down now?
Let's try a little analogy. How many people went shopping on Black Friday? How many waited in line to pay or drove around looking for a parking space?
Now, even though the stores knew that would happen, how many stores bought the property next door and renovated to put in 30 more registers and 300 more parking spaces?
Why wouldn't they do that? I mean, god, they knew it was going to happen, so why not be prepared? I'm pissed, damnit.
You don't spend big money and make long term changes to fix a temporary problem. In normal world terms, this week is the biggest shopping day(s) of the year for this MMO, and the resources they allocate to each server need to be based on what they will need for the vast majority of the life of the game, and not for an extreme aberration that will only happen once.