Sure, good point. I’ll bite. The first sentence Wikipedia “monetary contract between two parties” definition leaves out the trading bit you include from other places.
Here’s what the Financial Accounting Standards Board says:
(https://www.fasb.org/cs/ContentServer?c=Page&cid=13510272100...)
Imposes on one entity a contractual obligation either:
A) To deliver cash or another financial instrument to a second entity
B) To exchange other financial instruments on potentially unfavorable terms with the second entity.
Conveys to that second entity a contractual right either:
A) To receive cash or another financial instrument from the first entity
B) To exchange other financial instruments on potentially favorable terms with the first entity.
Sounds like insurance fits in this category. I die next week, you pay me a million dollars, and I’ve only paid you $100 (or whatever small premium)
Furthermore, any agreement can be traded if someone sees an advantage in the trade and can rely on the agreement to hold.
Just because someone’s not doing the trade doesn’t mean it’s not trade-able. I guess it could be explicitly prohibited but even then I could see a Dane in the above insurance example securing a home loan because they have this insurance, and would be able to pay out upon death (for example) as a normal thing.