[bhousel]

You've set up a false dilemma between "build what the customer wants" and "build what I want to build". Entrepreneurship can be both those things and more. It depends on the business, the team, the customers, the market, and luck.

As to your sub question, it's really hard to start a company part time, but people still do it. Like all things in business and in life, the answer is "it depends."

[qikquestion]

Thnx for your points. my worry was "I shouldn't end up in a place where I worry that the very idea which was the starting point for moving from a well paid job is not getting realized". This was heard from my friend very recently and so he was demotivated for a while to pursue it further before pivoting. I want to clarify if that is the norm or it is the persistence in an idea against the odds does it.