> One is freeware, that a programmer writes and gives the program
> for free, yet he retains the code closed.
> If he wishes, he can make the program a commercial product and
> pull the freeware versions from the various servers.
> This has been done many times.
>
Unfortunately for the software author it's a bit like Pandora's Box.
Once the freeware is out in the world then it's hard to force
resourceful users to pay for later chargeable versions.
Some authors do a better job than others of removing their early
freeware versions from servers.
But the freeware world has a secret weapon in Susan Bugher who can
track down an old copy of even the most obscure freeware. And
frequently does so. Her success rate is amazing.