This is the strategy that Democrats have followed since 1988. In that time, the Overton window has relentlessly shifted to the right. It is the dynamic that makes it politically practical for Republicans to also relentlessly shift further right. It’s a positive feedback loop that eventually spirals toward fascism. Just examine the last four decades. It’s right there.
It’s not ‘consensus building’ when the other party has a principled opposition to consensus. It’s just a pre-negotiated concession. It is a lack leadership. That is the Democratic Party in a nutshell.
First off, it’s not about majority, it’s about plurality. But that’s just nitpicking.
The disagreement here is about how a party achieves pluralities. They could follow a strategy of running toward the positions in their opposition, or they can do it by attempting to convince members of their opposition about the merits of their principled positions. Some compromises will frequently be practical, but enshrining compromise itself as a core principle, as opposed to policy, is only a strategy for maintaining power for power’s sake. Democracy should be more than team sports IMO.
Again, just look at what happened in the last 40 years. Asymmetrical consensus seeking has fueled the march of American fascism. Unless you want to argue that democracies will always inevitably slide toward fascism, I refuse to accept your characterization of democracy.