I think its a thinkable idea but my old man always says dont put all the eggs in the same basket. So in this perspective it can be dangerous for your portfolio.
I always followed that rule, actually it does not mean you'll be successful if you follow that, it's still important you have luck also.
We only do that to diversify in order to minimize the risk, but as we minimize the risk it could somehow affect our opportunity to make more profit.
As what they said, big risk will result to big reward, and that's what we are playing here.