what if your kid never learns from having his xbox destroyed he always cons you as a parent way into getting another Xbox somehow ?

I would stop "destroying" the Xbox and just take it away. If they get it back and then misbehave, take it away again. Why keep wasting money? 

I would not get him another one since he keeps breaking it. 

I wouldn't ever be conned into buying another one. My son sometimes loses his temper when playing video games and I've already told him that if he breaks it I won't be replacing it. He knows from experience that I mean what I say. 

i would tell him he needs to get his own

I'd say it's time for some parenting classes.... the child is not the issue here, the parent who cannot seem to parent is the issue. If the parent is destroying things, they need to stop and realize that trying to match poor behavior with more poor behavior is not working for them and they need some skills. I get it, there are times I want to throw my son's tv out the freaking window, but I don't. You know why? Because I'm the parent and I'm supposed to be teaching *him* how to solve problems effectively and smashing things is not the way to go. If the child is destroying the xbox, then the parent says, "If you choose to destroy your game system, you are choosing to not have one. I will not be replacing it." Then you start teaching some communication, problem solving, and self-regulation skills.