[mehulved]

I have a very good idea of what I am saying. You just want to grab all you can get for free without giving back anything. That's just exploitation. Before using Open Source do understand what open source is and what is the ideology behind open source. Open source movement is not about grabbing whatever you can get for free to develop your applications to keep to yourself. Open source is an ideology which promotes sharing and freedom to create quality softwares and make computing in general affodable and available to wide user base.
And it is possible for experienced hackers to very well open up the code of application with the tools available, that all of us here know very well. And you can charge for the open source applications so that you can build a profitable business.
If you don't want to release your software as open source, then why do you want to use open source tools?