He need to invest that in trading and sports betting that 3 bitcoin is good enough capital to earn 1 bitcoin fast but if he is lucky enough, spending bitcoin is not good because he need to pay that in few weeks.
Im agree. If that person wants to gamble it then gamble it in those gambling method that really worth the risk.
Trading and sports betting is really worth to try even with risk since we can play analyzation here. Yes we are risking money here but it's not that we are bound to always lose.
That's right, its not mandatory that we will loose every time in gambling, if we play with a smart strategy then we can make good money in sports betting and same goes with trading too.