A good start is stop using the Marxist term “capitalism” for the free market economy.
The free market is freedom is action. Argue on the basis of the free market economy which is the voluntary cooperation between buyers and sellers in the open competition of the marketplace free from government interference.
America in the 1800’s was a rare example in history of a truly free society. The feds were about 5% of the GDP - not really amounting to much in the average daily life. America’s market economy free from government interference thrived and America became the wealthiest country in the world with the average citizen in America better off than the average citizen anywhere else in the world.
The free market creates WEALTH. Government and socialism create POVERTY.
The free market creates WEALTH. Government and socialism create POVERTY
I would add that while the free market creates wealth, the government and socialism confiscates wealth -by force.
I have perhaps a different definition of the word “greed” but I feel more accurate;
Greed is the desire and pursuit of unearned wealth.