No amount of advertising can sell a bad product. In fact, I’ve seen some businesses that never advertised because they are not allowed to advertise or market their product, so they let their “great” product do the advertising for them.
Examples of such businesses are law firms, architecture firms, and healthcare companies.
Imagine driving past an amazing building, and wondering who designed it? Imagine a friend winning a case that you thought was already lost, and wondering who defended the case in court? People will go the extra length to fish out the person or firm behind something amazing.
So for me, a great product is the best path to success for any entrepreneur. You can spend millions on Google AdWords, or hire the same ad agency that billionaires use, but if the product or service you’re offering is no good, the result of the advertising effort will be zero.
Let your work speak for itself.