In any business you start, there are certain tools you need. If you were going to start a restaurant, you would need to invest in certain tools before you opened the restaurant or the restaurant would fail.
Can you imagine trying to open a restaurant without pans, grills, ovens etc.? Unfortunately this is what the vast majority of people do when working online, they start their business without the tools they need to succeed and they are setup for failure right out of the gate.