In the real-world, most airlines margins are only 5% in a good year. Even in AWS, though some can make 40%, even the good ones only do about 15-25%.
So you can imagine if you cut your prices by 20-25% like you state what that means. It means you're giving away all your profit. Hence the "Brick Wall".
Bump that pricing back up to Standard, leave your pricing there, and you'll make plenty of money.
Yes, on your very first routes when your CI and RI are both 0, standard pricing yields a pretty low LF. But then cutting price doesn't help a whole lot either. You still net about the same revenue if you just leave pricing be. And you'll net a whole lot more as CI and RI grow.