Corporations and black money from rich people giving to american political parties does provide an endless pressure on both parties to cater to the needs of rich people and companies, of course. But it's not that simple. The republican party has been the party that supported large companies directly, but the populism of Trump and culture war pushed most recently by DeSantis in Florida shows they are happy to score points against say Disney. The democrats have been pushing for people to have nationalized health insurance if they want it, which would definitely reduce the power of corporations - at the same time the dems go along with needs of big business very frequently. Yet dems support unions, repubs are very against them.

I agree with you that the core of this is money in politics leads to money having too much influence with politics. On the supreme court, I think that republican federalism has control over the court, that's the clear place where the 'ideology' of dems would lead to different results. But this isn't a secret, the parties encompass multitudes of views, because we squish all views into two fairly narrow groups with our accidentally designed for two-parties political system.