All of the listed factors also apply to marriage. While I am single, it seems like marriage is HARD all by itself. It takes time, effort, communication, and patience. Adding a start up on top of this is going to make it more difficult (although I would never say impossible).
What's more, running a start up is a formative experience that will likely change you. It would be challenging, though by no means impossible, to have a successful marriage while the character of the two people who form its basis are changing.
What's more, running a start up is a formative experience that will likely change you. It would be challenging, though by no means impossible, to have a successful marriage while the character of the two people who form its basis are changing.