No matter how much losses these companies make, their advertisement costs are already higher.
Same is the case with Zomato. So many ads but no sight of company becoming profitable.
I hope the companies don’t become bankrupt once VC funding stops (for swiggy)
If the business model has longevity, and if the companies have cash to withstand ups and down, and if the names become household and the market share is divided between them, unit economics will get better, and if it happens, there will be profits and eventually share price appreciation.
I don’t know if that is the case with Swiggy and Zomato 
I don’t know if only I’ve observed this but of late, online delivery charges , food prices have increased while discounts have drastically come down .
But still there is no improvement in profitability. Infact there is only further deterioration
A price is good at a certain level, value investing so to speak, so perhaps these businesses are potential candidates to invest too, at a particular price.
I have observed this even in online payment apps. Before there used to be some offer, now less offers and low discount.