You make a fair point. Yes there may be occasions where it's favourable to breach the rule, but the coaches would each have to develop a strategy for how this would work. It may be that the team cannot breach the rule unless instructed by the coach either during breaks or via the runner.
Coaches may decide that individual players can break the rule but only in limited situations.
As a spectator, I don't really care about these machanations, that's for the coaches to figure out. As long as we can give the players more space for the majority of the game, then that's a big win.