I don't get why some people bash on this guy.
He only tried to improve the situation on his server(s), emphasizing that he is a big spender. In the adult world top clients are the A focus to every company.

Which leads me to my conclusions:
- Oasis has no idea what it's doing, close to zero management skills, gives no f***s about big spenders, no less about free players
- (OR) They make so much money from the new servers that they focus on them, and the dead ones are not a priority

I don't believe in his case the big frustration comes from the missed events or from some missed rewards (rewards that me*most nothing to high spenders).

I think he's leaving because of the disappointment on how this game is managed. As long as Oasis floods the player base with new servers (btw they are reaching server 500 in ~9 months) and mergers happen at a snails pace this situation will just get worse and worse for veteran players.