Nothing can happen fast enough in a startup. It's a scramble to get the people, define and develop the product, test the markets, get the customers and deliver and start on the next version. There may be competition working on something similar or if you are successful you can count on copycats to steal your ideas. The money is running out, the prospects are taking too long to decide to buy, the customers you have are complaining about bugs and the new release is late. Expect to work your butt off.