Because why would you say that?

You would say "we're going to build more housing."

People say that about eggs.

Eggs are not treated as the most important investment of your life, the value of which you hedge the entire rest of your life against, and which is expected to increase in value to support an growing rather than shrinking lifestyle. Eggs are nothing like houses economically

Well no, one person (a moron and a liar) said that about eggs