This limit is only in the Debug version, so it doesn't influence production servers at all, it's only for when developers are hunting down those memory leaks.
With MCServer currently being compiled as 32-bit (on Windows), 2 GiB is the max memory available anyway (well, 3 GiB in special cases, but noone cares to set that up)
With MCServer currently being compiled as 32-bit (on Windows), 2 GiB is the max memory available anyway (well, 3 GiB in special cases, but noone cares to set that up)