It's not common sense it's micro economics.

Sorry, but projects are set for an intended volume.
Because if you want to sell more then you need, among other:
- more advertising
- more machines and factories set up for the product at launch
- more formation for repair centers
- longer support because of brand image more at stake
and so on.

These costs increase faster than sales volumes.
But you can always sell more. Sure.
So if (as you say) companies always want to sell more, they can increase the sales up to the point where they lose money.
If loosing money is perfect business sense for you, I think we can end this discussion here.