Its today an unsolved problem
to reuse intelligent property on source code.

Since only after you pay for it,
you can check, if it was worth the money or not.

Also there is no control, how you reuse it or pieces of it.
Means, how many money is it really worth for you.

Its also to easy to copy source code and rewrite it to
cover the original ownership and sell it again.


So you can often buy it only as precompiled library.
But then you add a safety risk, since you can
not check, if it was bug free.
You must trust the producer and God.



Peter