That “phenomenon” as you call it, is otherwise known as a satisfied customer.

Nobody has time to exhaustively research every product they buy, and most people don’t have the inclination. Therefore when they find a company that meets their needs reliably, they tend to keep buying from them unless there is a problem.

This is a normal feature of business. Every business tries to satisfy their customers in this way.

If there is something special about Apple, it is that they have a lot of satisfied customers.