Some people took it as "Lost is a mediocre song" but my take was and is that Lost was a huge success due to nostagia and right timing. 20+ years has passed since the nu-metal peak in the mainstream world and now it's "cool" again to reivindicate that genre. 10 years ago that wasn't possible. Second, we millenians we've reached out that age (around 30s) where we start to idealize that music of our youth. I'm a hardcore fan, like many of you, but many of my peers just listened the first two records (three if we count Reanimation) and gave up during MTM because, basically as a teenagers we didn't want anything to do with our "childish music". Which takes me to my third point: The song has this classic LP vibe, so many of those who ignored the band beyond 2007 now they feel connected the band again. That third point didn't happened with She Couldn't, it wasn't your classic LP song, as simple as that. Not even the pandemic helped She Couldn't to have more visibility.
Based on this, we have two roads ahead of us:
If the new song it's a What I've Done part 2, as Lost was similar to Numb, then yeah, you'll probably have another huge hit, since WID, BIO and New Divide are basically the songs post-2004 that kept the interest of the mainstream crowd.
On the other hand, if we're talking about a Blackbirds, In Pieces, No Roads Left esque song, then you're for a big disappointment for the big crowds, and could happen like with She Couldn't, people could care less.