Depends on the markup. As a person who earns a decent wage I cannot afford to eat delivery food casually as the markup on a per item basis is steep. Even the good pizza place costs near me is $43 for a single large with 4 toppings, with delivery it is closer to $50.
Sure but delivery mark ups and high delivery fees are a recent thing. Plenty of restaraunts offered the same price in-store as for delivery, and the fee was usually $2-4 plus tip. It's not like technology has gotten worse or cars have gotten slower. So it was sustainable, and now they want us to believe it's not sustainable.
Right now yes food delivery is a luxury. I guess the point is... how and why did that happen?