From Robert Reich:
' Friends, During a three-hour interview with the podcaster Joe Rogan some months ago, Elon Musk revealed the core of the ideology animating the richest person in the world.
“The fundamental weakness of Western civilization is empathy,” Musk said, adding that liberals and progressives are “exploiting a bug in Western civilization, which is the empathy response.”
Musk pointed to California’s move to provide medical insurance even to undocumented people who qualify for its low-income Medi-Cal program.
“We’ve got civilizational suicidal empathy going on,” Musk continued. Empathy has been “weaponized.” '
Elon Musk has a colossal misunderstanding of basic macroeconomies when he suggests that there is "...a bug in Western civilization, which is the empathy response...”
When you ignore the 'empathy response' and assume that economics is a zero sum game, then you create a situation whereby you are constantly chasing a bigger share of a smaller and smaller pie.
The actions you might take to chase that bigger share would probably involve taking away some income from as many as possible in order to increase your riches. You might weaken labor unions so that they cannot get higher wages for workers, eliminate the minimum wage so that people will work for very low wages, do away with public government funded medical care and stop or reduce pensions for elderly and disabled people. That might grow your wealth in the short run but in the long run your income and wealth will shrink since fewer and fewer people can afford to buy the stuff you sell.
All these follow from the classical economic, free market school of economics which argues that any interference in market dynamics lowers welfare for everyone. In that belief system any introduction of empathy means changing some market outcomes to favor some people disadvantaged by market forces. I won't introduce the concept of market failures here since it is a long discussion but I will suggest that those free market principles require that competition exist in order for those principles to work.
We can assume safely that national governments which enact the 'empathy response' in a national economy means that more people will better off with higher incomes and better living standards, which means that more people will spend more money to buy more and better stuff and that the economy will grow.
See the Circular Flow of Money In The Economy illustration below:

Copied with permission from: Macroeconomic Essentials: College Macroeconomic Textbook for Undergraduates Kindle Edition; by Mike P. McKeever (Author)
And it follows that if you are a rich person with a high income, you derive most of your income and wealth from people buying the stuff you sell. And it further follows that the incomes of everyone including especially those of rich people, will rise.
See also Dispositional Greed Scales from the Tilburg Institute for Behavioral Economics Research (TIBER) .
Article Excerpt: 'Greed is the insatiable desire for more. It applies to any
valuable thing, such as money, goods, friends, love, or
sex. The experience of greed combines a feeling of dissatisfaction with the current state of affairs with a longing for
something better or more (Seuntjens, Zeelenberg, Breugelmans, et al., 2015). Greed is seen as an important motivation
in economics and is thought to have been an important
cause of the financial crisis and fraud (e.g., Mussel et al.
2018). Pathological personality traits (Sekhar et al., 2020)
and the dark triad have been positively associated with
greed (Veselka et al., 2014) and greed has been found to
be a cause of unethical behaviors that lead people to take
more than they are entitled to (Seuntjens et al., 2019).'
So then, the empathy response actually makes rich people even richer. One would think that otherwise intelligent people would understand that basic relationship.
Of course, there are some people who accumulate wealth through government contracts and are thereby not inconvenienced every day by market forces. Even those folks, however, will face the consequences of lower general incomes for everyone since the government contracts revenues are paid from income taxes on taxpayers. As wages for most people decline then the income tax revenue to the government will also decline making it more difficult for the government to enter into those contracts. So far, entitled government contractors have encouraged the government to borrow money in order to pay for government deficits, some part of which are caused by those self-same contracts combined with a decline in individual household incomes and lower income tax payments. But resolving that issue will be painful; for all sectors of the population as we saw in the Greek example of a few years ago.