A few things:
1) The rules are established in Classic
2) I assume there are a lot more players who actually own the Classic game than who own Revised, Europe, Pacific, Anniversary, Etc…probably more who own Classic than all the rest combined. But that’s opinion. (Some people think every opinion I espouse is me claiming it’s a die hard fact, so I generally have to say opinion or suffer a few irate twits spamming my responses with accusations I’m lieing or distorting the facts or whatever.)
3) The tournament rules for Classic have been generally accepted uniformly across the spectrum of clubs.
4) Most of these clubs, I think, formed during the days of the MS Gaming Zone when the Hasbro Axis and Allies and Iron Blitz games were released.
5) We call it classic because it’s just that, a classic game! Asking why it’s still around could be taken as asking why Chess or Checkers is still around. (AKA, that would be, taken as an insult. heh.)
6) My personal opinion here, but, I think many people who remain and play only classic do so because they have formulas of what to do, when to do it, and how to recover from bad dice or exploit hot dice. They say things like: 7 Infantry per 1 Tank; 7 Tanks per 1 Fighter; 7 Fighters per 1 Bomber. That’s just an example, it’s not a recommendation for or against that ratio of equipment. They know what their first round builds and attacks are, they know what their over all strategy is, etc. They follow a set plan to the letter making only those modifications necessary to adjust for the fluctuation in dice. (Note, they take into account the statistical probabilities in their strategy, so we’re talking a relatively minor set of adjustments to their builds and moves to account for a few bad or good dice.)
The above are just my opinions. I’m not saying it is fact. I am not saying that they are bad players because they use a script - maybe they developed the script? You can’t say a human is a bad player because they always play the first 4 moves of Chess the same way either. I do feel they are missing out on a lot of fun by sticking to classic and nothing but.