To earn in bitcoin,hard work is needed.It is not gambling to fully rely on luck.Bitcoin is not a quick rich scheme.
Even in trading,you should do market analysis,read price charts before doing any trade.Otherwise,trade would end in a loss.You should not be emotional and should not do panic selling.
If you believe that you lack such trading skills,then you could buy ASIC miners and start mining bitcoins.But cheap electricity should be available to get more profits.
If people started realising that bitcoin is not a get rich quick scheme and it is a tool or currency that you can earn if you work pretty hard for it, then the better. The reason why some are angry today about bitcoin is because the value did not wait for them before it rose to the level it is, forgetting that time waits for no man and the earlier you make use of opportunities around that you have, the better.
Just like you have mentioned, those are some pretty good stuffs to invest in if you have the bux to start and if not, you can invest in yourself and build some skills that is lacking or really needed in the community and earn a lot from it both bitcoins or even in the real world.