I learned recently that there's actually a name for this concept. Murc's law states that in American politics, only Democrats are assumed to have agency.

Presumably democratic reforms could help change the dynamic if they changed the incentives. Right now, it's a politically viable strategy to just obstruct the other party when out of power, and politically unviable strategy for Congress to oppose a president from the same party. Both of which lead to a lot of dysfunction.

As an example, if Congress had multimember districts with an appropriate voting system (e.g. ranked choice voting for all members at the same time), then you can effectively nullify the power of gerrymandered voting districts (the current system, where effectively politicians choose voters rather than the other way around). Doing so would elevate the influence of general elections over party primaries. Then representatives would be less afraid of challenges in those primaries, which is currently one of the major disincentives in opposing the president of the same political party (fear of being "primaried").