The logic is that even if you knew that you would need pods, (how many; one, two three) beforehand, VM have no means of confirming that? So they would have to just send them out 'on demand' to anyone who requested them. And human nature, being what it is, a fair number of people would think, 'well I'm entitled to three pods so I'm going to demand them even if they sit in their boxes on a shelf'. Which is not a good idea and wasteful, so you can see VM's position here?
And you may not need them, 'the house is big'; not the most important thing, the material that the walls are made of, the position of the hub in relation to the general layout, are more vital.
So, although, you my be eligible for free pods, you do have a have a demonstrable need for them.