Android paid app FLOSS?

hi /prog/
I'm planning dev apps for android market. I'm a FLOSS soft. user/hobbyist developer, in this case I want to make some $ (I can't eat freedom philosophy), my dilemma is if I want to earn some money I have not to release these apps as FLOSS, because I give up many of my rights, I only can earn money with distribution (as many of the future buyers of the app!!!).
In this case FLOSS doesn't works?
The only way is not to open source, proprietary software with EULA?

>>10
that's right but these costumer pays, and then distribute changing the name free...business end's.
The only choice is selling support? book's, about an Android app? t-shirts? I'm a developer or an merchant from the Middle Ages?