LI is efficient also due to salary efficiency
The back court can simply have od pa and is to score effectively
And keeping a min salary
My guards r shooting 50% despite relatively low salary
The bigs generally have high salary regardless of the tactic
Unless u want to cheat off with no REB
But that will put u in huge disadvantage
Each off reb gives u at least 40% more chance to score
This is hard to achieve if u just concentrate on diff bt inside shot and inside d of the two players
Unlike JR on guards which has no impact on the game if u do inside tactic
The 2-3 zone doesn't work Bc I made my bigs capable of hitting mid range jumpers
The 2-3 doesn't work because the best defense against inside scoring is outside defense, and the 2-3 kicks OD in the hairy peaches.
In terms of the topic in general, I don't agree that it's impossible for an outside offensive team to win, especially since we have Silverbacks in the league who was so successful in the NBBA. But it is definitely a challenge, for many of the reasons you've said.
I think the most important part of making an outside team work is, of course, the big men - you've got to be able to have them slow down or stop your LI competition's big men and still provide as much or more offense than an LI guard. Probably much more offense, since your guards are going to have one or several 5-19 shooting days even though they're supposedly good for 100+ PP100.
But of course, to have that kind of defense from a big man and having rebounding (which is massively important) means that you've got to find a way to get the offense from them cheap, and that means keeping their IS way down, training a lot of guard skills, and then hope that you can somehow manufacture enough points to pull out games.