It's already expensive to eat out. Costs can be 2x or 3x versus making it at home (even for simple dishes, such as pastas). I doesn't seem like either the restaurant nor the delivery service has much power to increase prices. Besides, we mostly want to support the restaurant (who lose a cut), so I'd rather just pick it up myself.

Anecdotally, I've seen more people learning how to prepare food at home, since they have much more time. Personally I've dived into bread making. We're also regularly preparing large dinners and freezing portions.