It is guaranteed that the number of total number of lost Bitcoins tomorrow will be greater than or equal to the total number of lost Bitcoins today, until the end of time, or until there are no more Bitcoins. There is no point in disputing it. We can argue all day long about what the rate of loss will be, but we'd only be guessing.
Try the following: Add 1/1 + 1/2 + 1/4 + 1/8+ 1/16 ... forever
It is guaranteed that the number you get tomorrow will be greater than or equal to the number you get today, until the end of time, or until you stop adding. Still, if you give me 2 bitcoins today, I will give you the sum that you get in bitcoins anytime. See what I'm trying to say? There will never be a problem. Don't try to fix a system that ain't broken.