[mimixco]

It's never wrong to leave if you disagree with the company's direction. We would have far less evil companies if more people did this!

There's a great real world example in the HP 9110A, the world's first desktop computer. The inventor worked for Smith Corona Marchant and the machine he proposed was way ahead of what they wanted to do, so he quit. He shopped it out and HP hired him as a consultant to build it (he never wanted to be anyone's employee anymore, which is the crux of my entire argument here), but HP did have to pay a license fee to SCM to make sure they had the rights to the machine because it was developed while he worked there.

Of course, since no one ever heard of SCM and HP is a household word, clearly quitting and doing your own thing was the right decision!