Similar to ibts cost, the time qustiona not have only one answer and the answer depends on a different aspects of your brend, such as your product, your target customer market, your commitment and availability your business concept, business strategy and more.
Similar to cost, the time question does not have only one answer and the answer depends on different aspects of your brand, such as your product, your target customer/ market, your commitment and availability (time and money), your business concept, business strategy and more.