The arbitrage process has made many people become liberal professionals working in the comfort of their homes and happy with the results, after all the volume of negotiations of bitcoin does not stop growing.
The price of bitcoin suffers variations among brokerages, and this variation is an opportunity for you to make money trading, but often, calculating rates to ensure profits can be a rather complex and time-consuming task.
But still we need big capital to get profit that able to fulfil the daily life. Not everyone can do trading, even not all trader can always control their emotion when trading bitcoin. So, I think everyone have to use their skill to earn bitcoin.
I agree that trading is not for everyone. Many people are busy with their daily lives and cant get enough time or patience to watch and keep tabs on the market for making trades. Most of the professional traders do control their emotions very well. If you cant control your emotions then you should not trade at all in the first place. Using skills to earn, like working for earning is good and is for those who have skills and knowledge in some professional field.