It would be great if it could happen, but it never will.
Why should a private airfield / landing strip owner be forced to cease charging for landing fees? Under what legislation could it happen?
Would a privately owned car park ever be turned into a charity free for all? No. So why should a landing / parking place for aircraft?
The landing fee at one place (UK) I'm obliged to regularly land at is £650. That entitles me to a 15 minute slot. If I remain there over that time, "ad hoc" parking is charged at £300 per hour. Fuel is available at the normal rate but a refuel does not come with free parking. In the past I've had to argue that it was only because their refuel took longer than normal (refuel pump problem) that I strayed into the "ad hoc / excess parking" fee time, after it appeared on the bill.
Do you honestly think any business is going to give up that, or any, form of revenue?