You’re not discounting properly. It’s more like $500-600 per year because of the time value of money and inflation. Replacement costs are $300 this year, but

You’re not discounting properly. It’s more like $500-600 per year because of the time value of money and inflation. Replacement costs are $300 this year, but initial construction is $500 this year because it’s on a bond. Maintenance isn’t included. The surface isn’t really going to last 50 years without looking like Fallout 2. So tack on another hundred. All of this becomes expensive for single family homes to support. The revenue per area is just so low.