No, you're not making profit from it. Also; if you're playing SA-MP you own SA...
Even SA-MP does the exact same thing, they rip models from the game.
No you do not. Especially not if you play with a pirated version. What you own (if you have a legal version of the game) is a license to PLAY the game. Doesn't mean you own San Andreas, just a license to play it.