Nowadays it is definitely way more easier but there are so many distribution platforms on which you are supposed to be present e.g. PC, Web, Mobile phones, Smar

Nowadays it is definitely way more easier but there are so many distribution platforms on which you are supposed to be present e.g. PC, Web, Mobile phones, Smart TV, Smart Watches etc. My best advice would be to pick one platform and focus on it and then slowly expand to another platforms. Btw Facebook's early codebase was spaghetti code PHP and look where they are today.