Trump is the Republican Party, there is no distinction.
The vast, vast majority of conservatives love him and will vote for him literally no matter what he says or does.
Owning the libs is enough for them, they don't care how bad their material conditions are as long as they get that. Never Trumpers are so few in number that they might as well not exist.
Meanwhile Biden, offering literally no hope or anything worth a shit to people, will convince very few that didn't vote for Hillary 4 years ago to do so for him this time around. Not enough to win at least.
It's like Chapo said: The choices are screaming defiantly into the void as you die and hurting the people you don't like along the way, or dying quietly reminiscing about "the good ol' days".
If those are the 2 choices, the former is gonna be way more attractive to people.
I don't see any sort of capitalist civil war happening, or even any sort of mass recognition of the split within them because there's such a mass power inbalance. The big guys will win. I think the most visible effect will be the almost certain takeover of theaters and restaurants, but there'll almost certainly be similar takeovers across a wide amount of industries. Hell we're seeing it in the gaming industry and they're not even hurting.