The Trumpers will blame Biden, Obama, Clinton, and every other Democratic POTUS going back to FDR. But you knew that.
They will not blame Trump. The cult leader cannot fail; he can only be failed by others.
It's up to business owners to capitalize on that advantage. Neither liberals nor conservatives are beholden to stabilizing prices at Costco or Adam&Eve. These are privately owned businesses that are fundamentally allowed to plan their businesses apart from (or even against the wishes of) the federal government.
This is how we ended up importing our cars from Japan and Mexico, and why our iPhones and Nike won't get made without slave wages. It wasn't Obama or Reagan that did that, it was executives and shareholders.
That pretty much sums up the delusion of the Left. The buck stops with the government, oligarchs understand that and work skillfully to turn the government into their tool. It wasn't ONLY Obama and Reagan who did that (the tool thing), it was the Democrat and Republican parties who almost unanimously did that, helped by a few gatekeepers who made the process more effective.
Bernie Sanders was a genuine and extremely credible leftist presidential candidate in 2016, and a sellout stalking horse for establishment liberal candidates in 2020 and 2024. Understand why that is and whom his antecedents are in the American political tradition into which his example falls, and not too much else in American politics remains obscure.
Of course, liberals will promptly proceed to squander even that advantage with their usual grating condescension and smug incompetence, and then blame everyone else for their own myriad failings, again as always.