there are two reasons for this... limited time table for beta test (regardless of what players think should happen investors can and do force developers to push a not so finished product out the door. if the product is not launched the funding is pulled then the product never will get launched). many launch bugs do not manifest under light load conditions. even stress tests, which are actualy very breife, cannot simulate a near full server load accurately.

MMORPGs are an incredibly complex set of programs that have to work together. no amount of beta testing will ever iron out all of the bugs in the system. this holy grail of "the perfect launch of a completely polished game" can quite literally never happen. the users are obviously incapable of understanding this. developers/publishers know the truth of this in a launch.

no one likes this answer. people respond to it with uninformed and uneducated assertions that basically take the for of "if they did this or that" which ultimately amounts to the same process a child goes through when they don't get the answer they wanted "but, but, but". these are the facts jack.

the world is not perfect so why should virtual worlds be prefect? at least a VR can be fixed with a few lines of code.