I think that's a problem with drive-in theaters overall. In the United States, they were built on the edges of towns, often outside of the city limits, where the cost of the land and property taxes were cheaper. As cities expanded, they became part of the city, subject to higher and higher taxes, as people were building houses and other businesses, driving the property values up. Eventually, they became too expensive to operate and the land was more valuable sold than used as a drive-in theater.
The movie industry here is on a downslide and some even say that it is already dead. To innovate, a theater owner looked at the prospect of the drive in movie concept. But as I had posted earlier, the cost of land was the crux of the matter. Rental is out of the question because land owners prefer to erect buildings for condominiums or office spaces. Actually, that theater owner has a building right in the city so she knows the costing involved in putting up a space-intensive project like a drive-in movie. On a brighter note, there is a government agency here called FDCP (Film Development Foundation of the Philippines) that is also dabbling on that idea. For now, they show old movies in the rural areas using a projector screen like a mobile theater. Let us see if they've got brighter minds there.
Charlotte, NC had one last time I was there for a visit. But the rest of the ones I was familiar with are gone now. That's so sad, too. I won't go to a theater. If I want to see a particular movie it's either at my house or a friends house. It would be the drive in every time if I had the option, though.