I am not a lawyer, but I think that sometimes the problem can be avoided by returning something other than cash. Sometimes, just having an expiration date makes the difference. You give me $1; if the project fails I give you a $2 coupon you can spend in Walmart you need to spend before December 2023.
(Of course, ask a lawyer about the details. I am just pointing at a possible angle of approach.)
I am not a lawyer, but I think that sometimes the problem can be avoided by returning something other than cash. Sometimes, just having an expiration date makes the difference. You give me $1; if the project fails I give you a $2 coupon you can spend in Walmart you need to spend before December 2023.
(Of course, ask a lawyer about the details. I am just pointing at a possible angle of approach.)