Yes but expanding the supply of habitable land doesn’t mean there is not still a finite amount of land. While a sudden “terraforming” might cause land prices to fall drastically, the population of earth will continue to rise (barring existential crisis). And as long as global population rises, so does demand for land. So even if every square inch became habitable, the supply would then be constant with demand still steadily rising. Regardless, these are scenarios that will not happen during our lifetime and may not happen at all.