Originally Posted by
Soon-TM
Short answer: you should have realised yourself.
Long answer: in case that you cannot/don't want to realise yourself, Blizzard is a publicly traded company, i.e. they don't make stuff out of charity (mostly) but to make money. Ergo, they are going to go with Vanilla servers not out of charity or mere PR, but because of money. Which implies that Blizz thinks that a sizable chunk of the private servers' playerbase is willing to pay for official Legacy. Like several players ITT, myself included.