A few thoughts here.

1) Do you think that Yoshida is blind to the amount of gil on each server? It's not exactly easy to hide how much gil each player has on any given server.

2) There are more economics in play, such as the amount of gil coming in from 2.1, as well as the general decrease of prices. Also, keep in mind that the cost born to buy a home isn't meant to be born by one person, but by relatively large groups.

This is something that Yoshida has to take in consideration when setting the prices of the houses.

The thousands of people complaining about the prices compared to the small numbers defending them (with flawed arguments or no arguments at all) is a lot less subjective.
My counter:

1) Anecdotal evidence
2) Fallacy of the numbers

*drops mike*