RE: Why the hate?
not hate economics
If I make "a" and can sell 15000 or I can make "b" and sell 5000. Given that the one time engineering costs are the same which do you think a corporation will choose to build.
For the other less "popular" tanks it will take "cottage industries" such as ETO, Ludwig, Wechoe to bring those tanks to market and if they are very lucky they will break even.