I did not receive a folio printout under my door recently at the JW Marriott LA Live, so I asked about it at the front desk on my way out.
I was told that they now provide the equivalent service on the room television -- and that this is a green initiative. Because I had not checked the folio through the television, I asked for a printout, which I received promptly.
I think that discontinuing printouts under the door is a good concept. But it would work better if Marriott could email a preliminary folio pre-dawn on checkout morning and another one later that day -- instead of only sending a final receipt several days after checkout.