I do not think they are friends or enemies, both seek to achieve their market share by offering their financial services in specific market niches. Sometimes where conventional finance companies can not serve specific customers, and in other occasions, where their business model is very efficient and captures traditional banking business.
I agree with Pedro Maria Martinez Villar, they might compete in some market share but they can complement each other in some other. I also would say that a fintech can be a microfinance institution. Furthermore, I look forward to seeing both stressing the competition on the traditional banking system.
I think they are friends. Although both have different objectives of service delivery but one common objective is to meet financial needs of the people who have not convenient access to traditional financial institutions.
Thanks Pedro for your answer: the question is about competition or collaboration. As private companies, they will have the legitimate goal of beating the competition even if they are focused on social targets (financial inclusion). The question is more about the vaue chain. Will fintech companies (microfinance licensed, as Fabio points) compete or collaborate (being providers or partners of enabling technologies)