[lessallan]

1) Creating any business is hard, unless you sell blue meth. 2) Creating two businesses is even harder (bootstrapping + consulting to make a living). 3) Technical hurdles are getting easier but rarely does the best product win. Marketing is hugely more important that product, although I wish that wasn't true.

[thenomad]

I suspect you'll find even the meth business is tricky. Indeed, I believe there's a popular TV series about it.

Serously, Breaking Bad is an excellent primer on entrepreneurship. It covers everything: distribution, marketing, negotiation, finding business partners, scaling, exit strategies...