Liberals will point to how improvements in quality of life have occurred in capitalist countries in recent centuries (debatable, and certainly not true for the entire world, but let’s assume they are correct for now). What is usually implied is that it’s all thanks to capitalism that we have the quality of life that we do, thus capitalism should be allowed to continue.
The thought I had was, do most of the quality of life improvements come down mostly to how agriculture and medicine developed? Meaning, famines were a harsh reality of life for much of human history, and modern agriculture has allowed us to now be in a position where globally, we can produce more than enough food consistently for the whole planet.
Likewise in regards to medicine… in the past just getting sick could be a death sentence. People had to live with incredibly painful conditions their whole life that we now have cures for. Honestly modern medicine is the one reason why I would rather live in 2023 than any other time.
What I’m getting at is… though these advances did occur under capitalism, I don’t think I would give capitalism the “credit” for them. Obviously socialism was not possible 200 years ago. I’m not denying standard Marxist historical progression. What I am doing though, is trying to attack the liberal narrative of treating capitalism as some god who has bestowed his mercy on us - that everything good we have is from Him, and thus we must give Him our praise and continue on His economic system into eternity.
The Soviet Union and China were/are both able to be incredibly productive in agriculture and ended their historic, periodic famines. The Soviet Union (and Cuba!) were/are renowned for their advances in medicine.
I think the only things you can give capitalism “credit” for is developing the productive forces, allowing for high levels of commodity production, and increasing levels of wealth (though not equally shared).
So much advancement of technologies happens in publicly funded research/open source software, and so much progress is held back by monopolies and patent enforcement, that I have a hard time believing we'd not have been better off with a socialist model of economy in most of the world.
Liberals are petrified of change and lack imagination, even if the current system is inherently unsustainable. It will default to unconstrained growth (the money only exists to generate more money). State controls are probably always going to be chipped away at by those with money because they can buy influence (in press, locally, fake protests/destabilize things to generate "real" protest). The only solution, to my mind, is a system which does not allow that to exist and which prioritizes sustainable development.