I'm under contract on a duplex that was fully occupied and supposed to be delivered with one unit vacant upon closing date in April.

My experience is once they publish/deliver they don't like changing. 

I am happy to deliver groceries, medicine, supplies...whatever. 

However, the amount of the EM might have a bearing on whether or not you should deliver the EM. 

Kitchens and bathrooms usually deliver the best return at 80-100%.I don't understand comment #1.

Compound that with high rents, and then a restaurant shut down, and all the locations that were already under performing have just been delivered their death blow.

Separate two things: possible compensation for her increased costs/damages due to your failure to deliver and he request demand for further compensation.Your lease should say something like “return of deposit is only remedy for failure to deliver”.

Example they have developed a strong carryout and deliver following in addition to eat in when that part opens back up.QSR is already doing most of their business through carryout and drive thru anyways so not affected as much.Some retail operators might close but I might counter they were under capitalized and possibly living on sales week to week and month to month.

This hedging system works well to deliver the borrower what was promised, while removing market risk from the Lender.

In concrete terms putting a property under contract means having an "executed contract"; both buyer & seller have signed the contract and the Earnest Money Deposit has been delivered.