Commercial Products in Python?

[Victor Muslin]

A friend of mine is considering developing a shrink-wrapped commercial
product. Python seems like a possible choice, but it is not clear
whether there are any precedents (though probably similar concerns
apply to a Perl-based product).

I would very much appreciate an advice in this area and possibly
answers to some of the following questions:

1. Are there any existing shirnk-wrap commercial products written in
Python?

2. If so, what are they? 

3. What is the best way to go about it? Is it better to have customers
install Python and give them bytecode files or use one of the programs
that creates an executable?

4. There is an easy shrink-wrap install for Python (at least on
Windows NT). Are there such on Unix/Linux platforms? (Typically
customers don't like having to compile software from source).

5. If the answer to question #1 is "no", why not?

6. Are there any licensing issues to be aware of?

Anything else that comes to mind in this direction would be very
helpful.

TIA