[ta_75000]

You only have to look at any thread here about copyright or piracy to see indignation at the very idea of charging money. People believe that software being free (for every definition of free) is a fundamental human right, and part of the justification made for piracy is that no one has the right to profit from software, and the for-profit distribution models need to be disrupted and undermined.

You can list a couple of exceptions, sure. But I'll see you that and raise you all of The Pirate Bay.

[acomar]

You're arguing against a straw man. The free software community has stood by using free licenses and selling exceptions and dual licensing. The FSF explicitly sells its code and gives you the source along with it. The community holds that software should be free as-in libre, not free as-in beer. This is a distinction that has been made time and time again.

That is, you are always free to charge money, but you are not free to withhold source or prevent modifications/redistribution of those modifications, because this restricts the rights of other human beings. Or said another way, your freedom stops where my nose begins.