FWIW, Apple appears as likely, or perhaps even more so, than Google to share your sensitive personal data with 3rd parties.
Disclosure to Third Parties
At times Apple may make certain personal information available to strategic partners that work with Apple to provide products and services, or that help Apple market to customers. For example, when you purchase and activate your iPhone, you authorize Apple and its carrier to exchange the information you provide during the activation process to carry out service. If you are approved for service, your account will be governed by Apple and its carriers respective privacy policies. Personal information will only be shared by Apple to provide or improve our products, services and advertising; it will not be shared with third parties for their marketing purposes.
I believe there's a distinct difference. They are sharing the info for one of 2 reasons enumerated: 1) So that ATT or Verizon can provide you service, 2) so that Apple can improve its own products, services and advertising...NOT for third party marketing.
Conversely, the reason google exists is to share information (again, directly with your permission or otherwise in aggregate) for third party marketing.
Apple gathers and shares your information to make their products better. For goggle, your information IS their product.