I could even turn the bottom floors into a coin-op 24/7 laundry facility for both tenants and the general public.

@ Dominic Bouchard, the service provided is that they put coin-operated washers & dryers in my laundry room, they make sure the equipment is functional and collect the coins, and split the collected revenue with me.  

I am a landlord in Cincinnati and am putting in coin laundry. 

The other side of the coin is that I don’t mind having my long term tenants paying $100 under market rent.....as long as they pay. 

I would not ever put in coin operated anything in any property I owned, because there will regularly be phone calls to me (or a manager) related to those items.Whenever a phone call is made to you or a manager - even if this is related to a company who is supposed to provide the service ( a soda machine company, a coin-op laundry company), this still results in a cost to you, because you are the middle-man.  

I investigated getting out of the deal claiming force majeure, but this could have lead to a legal battle I wasn't interested in heading down based on my speculation of dropping home prices in Lakewood, CO. In

On the other side of the coin, you have pharmaceuticals companies, who often have negative level of net debt (debt - cash) because if their next break through drug may not get approved and their sales will drop. 

And that's really only if you have some applicants that are pretty equal and the decision is almost a coin toss. 

To your final question: crypto is very volatile, yes.  

Who is going to manage the coins for you?