Every person in the country has an interest in having electricity. Therefore, every person in the country should pay for electricity.

What is the most cost-effective and reliable way to administer something that every single person in a country requires? Taxes and the public sector.

It's not rocket science.

It's just like Visa and other payment processors. What do you think that 3% on every single transaction is? That's a tax. The difference is you're being taxed and you're buying someone's third private jet. If everyone is gonna be taxed regardless, just nationalize it. At least then we won't have to pay the burden of profit.