You can't do it alone to make it big. Be it as a commercial product or an open source project. In case of commercial project, you have take forward the team sell it to clients whereas in case of open source, generally public/your clients take it forward and you can provide professional support for your clients when needed.
At the end of the day, its your call. What tradeoffs and benefits you would choose over others. In case you need any help of you're stuck somewhere, I'd be happy to help.
Good luck!