Hmmm...
... bad mouthing a company that has done nothing wrong to you on a public forum...

>I work for a company that produces java software
So, you where looking to moonlight and they did not give you the source code they spend many years to develop? How bad of them.

> and understand the implications. But these things can be solved with NDA's and other forms of legal basis.
Are you a lawer to know?

If you are soliciting business from them, they may not reply because you are not their customer. It is as simple as that.

Stefan