I'm not even sure I could do it alone. It's so much work. My co-founder and I lean on each other for motivation and support. When it's you against the world, a teammate can be invaluable. Particularly when it's looking gloomy. Which it will.

But if you strike out alone, good luck! I can't speak for everyone obviously and I can't generalize and say it only works this way. Just giving my two cents.