Google, Starbucks and PayPal are mentioned in paragraph 1 (lines 1-8) since they

are the only well-known companies in America nowadays.

represent companies which have never delivered high returns to the investors.

are examples of companies which made significant alterations to their original business plans.

illustrate the kind of businesses that remained loyal to their original plans and fought for results.

have founders who have been on the cover of Fortune magazine and are the world's richest men.