For an early stage start-up I don't believe that matters. If you have success after the first couple of years, you have the luxury of time to decide what gets b

For an early stage start-up I don't believe that matters. If you have success after the first couple of years, you have the luxury of time to decide what gets built to replace it. If you don't, well, at least you didn't waste time on code that wasn't the core of your business.