You should tone the paranoia down a notch. Realistically speaking if they can't identify you they'll just give you a worse price. It makes absolutely no sense to refuse a sale.
>Not if there is a monopoly on service and you can't afford.
Where do you live that gas stations operate as an monopoly? Gas stations are heavily competitive and operate on razor thin margins.
>The gas and electric company already know who you are. I wouldn't put it past them to start doing this.
Those are heavily regulated utilities. In most jurisdictions they don't even have the power to set their own prices, and they can't even cut you off for non-payment without going through months of warnings. They're certainly not going to refuse service because you can't scan an NFC card or whatever.
They are heavily regulated now, but it's inconceivable that these industries become more unregulated, it's not hard to make an argument that companies should be able set there own prices.
The way you propose the alternative has to also be satirical, being punished for preserving a right to privacy with a higher price, is incredible dystopian.
He basically described every rewards program ever. Before modern computers and data science that was the way businesses could get an idea of who wanted to buy what, and they give discounts if you sign up.