There was a situation 2 years ago when i last played in some kind of international server (x5 rates) when admins didn't make as profitable donate as this, but... After 2-3 months they started selling a/s grd/ rb jewels 'n shit silently and peaced out without saying anything, so it just straight died immediately. And that server was even more advertised than this one, tons of potential, 5k+ people but they gave in for the money and abandoned their work leaving players behind.
I think this server has potential, because admins will get profit out of it for a long time, thus they will try to make in-game experience worthwhile for their "clients".
But still, they could take out something most disbalancing from the donate and make it better for everyone and not punishing themselves too hard.