Why not the same places? I have met countless people through meetups for side projects. In fact I would rather work with people I meet in all the places you poi

Why not the same places? I have met countless people through meetups for side projects. In fact I would rather work with people I meet in all the places you point out for side projects to begin with. That's a good foundation for building a working relationship for a serious business. It allows you to get to know each other without the commitment of a business.