Respectfully, no.
their sound isn’t western friendly AT ALL
MITM and Loco are two songs that weren’t liked a lot, Wannabe’s their only song international audience loved. Dalla Dalla does not count it was a hit in Korea not internationally.
If they do songs like Swipe? Maybe. But even then part of why BP are so popular is that they don’t SEEM like a Kpop group. Itzy do. BP look like western celebs rather than a Kpop gg. BP is 3/4 english speakers. Itzy is much MUCH softer than BP concept wise.
Compared to other current GG's that aren't BP, they are the closest to "western friendly. Their big numbers on international streams this year for mediocre songs, compared to acts that did do better in Korea, prove that.
Again, not saying they will surpass BP. No currently existing GG will, especially internationally. Not for a long time. But Itzy, more than any other group, have the power to be the second best