There's little doubt that today's Democrat Party is the party of the rich.  Actually, that's an understatement.  Far more than billionaires are involved.  A better expression of reality would be to say a fundamental core of Democrat coalition is the managerial class, also known as the elite.  These are the people who run the media, Hollywood and the entertainment industry, the big corporations, the universities and schools, the investment banks, and Wall Street.  They populate the upper levels of government bureaucracies.  These are the East and West Coasters. 

The alliance of the affluent with the Democrat Party can be seen in the widely disproportionate share of hefty political donations from the well-to-do going to Democrats and a bevy of left-wing causes.  It's also why forty-one out of the fifty wealthiest congressional districts are represented by Democrats.  Bernie Sanders is an exception.  But he's an anomaly viewed as dangerous to the party, which is why he's being crushed by the Democrat establishment. 

Why do the wealthy align with the Democrats?  The answer may seem counter-intuitive, but it is really quite simple.  It's surely not ideals or high-minded principles.  Nor is it ignorance.  Rather, it boils down to raw self-interest.  

In his book, The Age of Entitlement: America Since the Sixties, Christopher Caldwell notes that rich Americans think themselves to be as vulnerable as blacks.  They are a relatively small minority of the population.  They fear being resented for their wealth and power and of having much of that taken from them.  Accordingly, the wealthy seek to protect what is theirs by preventing strong majorities from forming by using the divide and conquer principle. 

As R.R. Reno writes when reviewing Caldwell's book: "Therefore, the richest and most powerful people in America have strong incentives to support an anti-majoritarian political system."  He goes on: "Wealthy individuals shovel donations into elite institutions that incubate identity politics, which further fragments the nation and prevents the formation of majorities."

Some of the rotten fruit of the wealthy taking this approach include multiculturalism, massive immigration of diverse people, resistance to encouraging assimilation, racial strife, trying to turn white males into pariahs, and the promotion of gender confusion.  Through it all, society is bombarded with the Orwellian mantra that "diversity is strength," as if repeating it often enough can make it so.  It is also why patriotism and a common American culture are so disparaged today.  Those from the upper strata of society project the idea that if you're a flag-waving American, you must be some kind of retrograde mouth-breathing yokel.  

The wealthy as a groups are content to dissolve the glue that holds the U.S. together.  And it is all done to enhance and preserve their power, wealth, and influence.  This is why they so hate Donald Trump.  He strives to unite people and the country, although you'd never know that that is what the president is doing  if you live in the media bubble.  Trump's MAGA agenda is an anathema to the managerial class.

To quote Reno one final time:

The next decade will not be easy.  But it will not be about what preoccupied us in the sixties, and which Caldwell describes so well.  Rather than the perils of discrimination we are increasingly concerned with the problem of disintegration — or in Charles Murray's terms, the problem of "coming apart."

Trump and the GOP he is molding are the vehicles to restore and strengthen national solidarity.  Trump said at the Daytona 500, "No matter who wins, what matters most is God, family, and country."  That is not the Democrat agenda.  As seen in Democrat politicians, their policies, and the behavior of their major contributors, the aim is to further weaken the social and national bonds in America.  There is a lot at stake here.  If solidarity wins, the Republic can survive and prosper.  If the Democrats and their wealthy cohorts do, then the middle class withers, the Republic dies, and the rich and their managerial class get to rule the roost.  That is what it comes down to.