I didnt say server costs, I said server burden. Long queue times on launch day, server crashes, very unevenly distributed server load when everyone is in the same area at the start. I remember FF14's latest expansion was so bad, they completely halted sales of it. Forget too expensive, there was no price, you could not buy it if you were late.
You dont have to pay $90, because you dont have to buy this early access. you dont have to buy the regular access. You are not entitled to this game as a human right, the developers didnt have to make this game, and they dont have to let you play it for whatever price you want. They get to decide the price.