All gamblers lose eventually.
You can verify this by measuring the size of the casino industry.
depends on your definition of gambling. dice, craps, roulette? this is gambling? poker -- not so much. i made a good living playing online poker before the dreaded Black Friday hit and threw a monkey wrench in my lifestyle...
Poker is still gambling. It's just considered as a "skill-based" game. We could really say that craps is also skill-based in the same way.
sure, it's gambling in the sense that betting on anything based on probability is gambling. trading equities, or bitcoin, is similar in that way. craps could be seen in the same vein -- though the house has odds on you; the probabilities are always against you. so, in that sense, it is a very different form of gambling and i would say more fitting of the definition.
Ahh, what you mean then is just the house has an edge when "gambling." FWIW, in poker the house has an edge as well: rake and antes (depending on the casino).