There goes civilisation...

You can't blame somebody for buying something if they have the money to do it! What about all the people who own the equivalent of 5 bikes in parts? Or all the girls who love shoes and handbags? Are we going to blame them for pushing up prices?

Yes you can, if they turn around and blame the less well off for not being able to purchase something that the behaviour of the wealthy has denied them.

Five houses, where families could live is a bit different to five bicycles, don't be so flippant.
Just because you can buy five houses doesn't mean it is moral to do so.