Sorry, maybe I was being unclear, because it isn't quite what I meant. I meant that that I think having no copyright at all is better than copyright enforcing proprietary software. Yes, you still would be able to distribute compiled binaries without providing the improvements back (and I think permissive licenses (I use public domain myself, rather than copyright) are much simpler than the GPL), but someone can try to reverse it (or to do other things with it) and they can't arrest them for that (although anyone can still make complaints about what the company is doing, to give them a bad reputation; people could still complain about anything they wanted to complain about). I know what is the point of the GPL, and I like that point, but think it is complicated, and I do not like copyright.

Of course if I write a program I would like that others who make modifications (public) that they would also contribute those source codes too, but I do not like to put in legal obstructions, so you should have freedom rather than having too many laws and obstructions.