Delta used to offer the service pre-pandemic; the food and other aspects of first that differentiate it from other classes of service may also be considered cheap to you, but it is a part of the product.

Pondering when Delta will return service on a forum that has a whole thread devoted to PDB is whining?
Customers always have a choice of other airlines that offer things Delta does not, but OP is simply asking when Delta will bring back a service competition already has. Delta brought back PDB on D1 already.