As a dusty old fart who only plays periodically now, I suggest that the largest issue Aces High faces is...instant gratification of the player base.
The time period in which I learned, back in the days when modems were "new" technology and game time could really only be afforded by adults, is now usurped by today's inexpensive technology and cheap access to the net.
The World has shrunk, net-wise, but the age gap grows larger each day, and those of us who learned to play when the net was new and expensive have given way to younger generations of players who were not raised with the same patience.