The Patriot Act and Snowden’s leaks have shown companies will go against their privacy policy to appease governments. Search engines especially are targeted by five eyes with the PRISM program where copies of all your data, linked to your payment, are sent to Five Eyes and stored. Gag orders and legal threats prevent disclosure, as has been done with prior tech companies who have tried to push back against this.
Be wary of trusting corporations with your data as monetization is a powerful incentive.