“All companies that grow really big do so in only one way: people recommend the product or service to other people”

Simplified Meaning:

When a company becomes very successful, it's often because people tell their friends and family about how great the product or service is. Think about your favorite restaurant. You love the food and the service, so you tell your best friend to try it. Your friend goes, loves it too, and then tells another friend. This makes more and more people want to visit the restaurant. The same thing happens with all big companies. For instance, when someone starts using a new phone and really likes it, they might tell others how good it is. Those people then want to buy the same phone. This word-of-mouth is very powerful because people trust recommendations from friends more than advertisements. For your own business or project, focus on making sure people really love what you offer. When they do, they will naturally tell others about it. Keep improving your product or service so people have more reasons to talk about it positively. This way, your business can grow bigger without spending a lot on marketing.