Forex brokers are not in the industry as saviors who bother to deal with all the mess in order to be able to render you all those awesome services such as leverage, mobile trading platforms, wide range of instruments so that you would be able to invest in currencies even on your phone and grow your capital. Forex brokers’ one and only purpose is to make money out of your trades and spread is the most basic way for them to fulfill this purpose.
Wider the spread is charged, higher profit that the broker makes. You have guessed it right, guys. This extra profit for the broker by widening the spread is created at the expense of yours. So there is a zero-sum relationship between forex brokers and forex traders in terms of profit.