The key is mitigating surprises or risk of loss on your end as much as possible.  

The insurance will not cover this, they only cover loss of rent. 

(In full disclosure, Im NOT a ecommerce guy, rather a technologist - but I do know enough about the back-end systems to understand that erent had nothing in house... they were completely 3rd party vendors for everything and when one of those 3rd parties had an issue the entire house of cards collapsed)Don't have any answers on your out-of-pocket loss other than condolences...

If you put into your contract that you can cancel for any reason whatsoever, without loss of anything on your part, then the contract is a sham contract because there is no reciprocal obligation, no reciprocal consideration.

You take a risk which could result in cancellation of your title insurance and complete loss of your real property without compensation in the event that a title issue regarding your real property arises.Contact your title insurance company to determine coverage and if your policy does cover transfers , and when or how.

You must document the loss you sustain and send the appropriate accounting statement per state laws.  

Does population loss not affect landlords as much as one might guess? 

There is no guarantee you’ll recover costs or lost rent even with the court action.

It will help offset the taxable income from the other properties.....passive losses and passive income.

If not it's honestly just your loss.