Quality Name brands inspire confidence because customers are able to rely on prior experiences or public word-of-mouth. They do not have to hope that a computer will work efficiently or that an item will perform as promised.
Quality name brands are "tried and true" -- known for quality, saving on cost, because consumers know that in the long run they will save money.
Quality name brands inspire loyalty, already having a market of loyal customers from repeat purchases. Customers trusting that they will get the quality products that they have come to expect.
In a nutshell, loyal customers simply trust quality name brand products.