Earlier quoted context omitted.
Nope. The right explicitly supports the policies that lead to the direct concentration of wealth and power and rise of fascism. If the right constantly sides with the oppressors, they are the oppressors. This should be trivial to see just by looking at voting records. It's all very public and you've got decades of history worth of it to review. Both sides are not the same. The right chooses to align with the top 0.01…
I believe it's a bit more nuanced than that. Both democrats and republicans have had enough power to make meaningful changes to prevent such a wealth gap and thus the wealthy play both parties. I do see democrats trying to help people have a better life (medicare for all, etc), but the wealth gap grew nometheless. Though I do agree with you that republicans don't seem to give a flying fuck about the people these days…
How often has either side had a filibuster-proof majority in the last 30 years? Once. Democrats had it in 2009-2010 for 72 working days. During that window they passed the ACA sans a public option thanks to Joe Lieberman. They have not had an opportunity like that since. And we live in a time when Republicans explicitly state they will do everything they can to oppose a Democratic president. Even filibustering their own bills.
Now take a step back and consider what each party is actually trying to accomplish and the mechanisms available to them. Budget reconciliation only requires a simple majority, but it's limited to taxing and spending. Tax cuts, the core of the Republican agenda, fit neatly into reconciliation. They don't need 60 votes for their top priority.
Democrats' goals... expanding healthcare, strengthening labor protections, voting rights, are substantive policy changes that don't fit reconciliation's rules. They need 60 votes they haven't had. So when you say "both parties enabled the wealth gap," what you're really describing is a system where one party can pass tax cuts for the wealthy with 51 votes while the other needs 60 to do almost anything about it.