Market-driven economy is totally fine as long as we're talking about choice in clothing styles and car models. When it comes to things that people depend on, like energy, markets fail. They have done so currently in Texas where its private energy providers were not ready for an emergency: https://www.greentechmedia.com/articles/read/texas-energy-system-faces-a-winter-reckoning
It never makes business sense to invest resources into managing emergencies. It's much cheaper to just shrug and say "shit happens", as customers have nowhere to go anyway.
What is happening in Texas is an excellent example of ideological dogmatism in action - everyone else is joining their grid to trade energy and increase resilience, Texas closed themselves and pretended they are self-sufficient. That's the very opposite of pragmatism, which is usually the strongest side of capitalist economies.