A hybrid socialistic-capitalistic system, if structured efficiently, is the best system.
Capitalism is great when there is fair competition and it involves goods and labor that aren't essential to our existence. It fails miserably when it comes to things like healthcare, security, and a social safety net. Capitalism only works when it's well regulated since the only thing that matters with capitalism is profits.
Socialism is best for the necessities in life, such as healthcare, utilities, water, police, fire dept, military... Too many necessities have been privatized with disastrous results. You wind up with people at the top getting paid millions while the workers are paid the bare minimum. Corners are cut to save money and increase profits.
Granted, when an organization is run by government employees, that's often disastrous, also, but at least the workers are earning a decent living. It can also be reformed by state and local leaders to become more efficient whereas with private enterprise, we don't have a say. And the owners of those privatized entities pay politicians to not interfere with their operations.
When an industry is privatized, one of the selling points is that with competition, prices will decrease and quality of services will increase. And that may be true, initially, until mergers and buyouts limit competition until you're left with an oligopoly, so gone is the competition. And of course, the CEOs get paid millions of dollars which has to come from somewhere, and that somewhere is people who use those services.