They absolutely will not. History shows us this.
In 2016, the Democratic establishment forced Hilary down the voters' throats because, hey, it was her turn, despite her being a terrible candidate with huge negatives.
America, thanks to the Red Scare has no viable leftist momentum. But even in the USA, the Democrats almost chose an open socialist (ie Bernie Sanders) as the Democratic nominee in 2016 rather than Hilary Clinton. I remember saying at the time that the DNC are missing how upset ordinary people are at the status quo. The DNC establishment couldn't care less.
What did the DNC learn from 2016? Absolutely nothing. They blamed Bernie voters (even though Bernie voters overwhelmingly came out and voted for Hilary in spite of their reservations).
Trump only really lost in 2020 because of Covid. Yet Biden's campaign did have a sprnkling of progresive policies that people got behind, so much so that it looks like he got 10-15 million more votes than Kamala got. There's a lesson in that but it won't be learned.
I saw someone describe this election as a Republican primary between a moderate Republican (Kamala) and a far right Republican (Trump). It's accurate.
Kamala's immigration policy was the Trump 2020 policy. She is to the right of Ronald Reagan on immigration.
And that's before we even get to the Middle East policy, which is not only bad policy but it's bad politics. Why? Because it gains her zero votes but loses a bunch. Anyone who hard line suports Israel is voting for Trump (and did). This was foreseeable. People were screaming about it for a year. Ignored.
So what lesson will the Democrats take from 2024? That they need to run even further right.