Anything is possible. It just requires money.
My guess is that the buyers can prove damages, meaning the seller will have to "buy them out.".
Your profile says home buyer. If you are the buyer, then I would talk with my Realtor and find out why they want to cancel the transaction. There may be a compelling reason. Find out.
I am not an attorney. This is not legal advice. I would suggest getting the facts, then assess your damages, and perhaps come up with a range of responses:
Heck no, I am going to force you to let me buy
Okay, you have a good reason for not selling now, but I have invested time and money
Somewhere in between.
For a new perspective, put yourself in the seller's shoes. Sometimes that helps you see what is fair.