It's insane to trust a company in the way you trust a person. Companies can change their terms of service, their policies, or even their entire ownership or leadership at any time. We have seen over and over again that companies are seldom held accountable for even explicit breaches of prior agreements unless there's either collective action or someone very powerful affected. The only way to trust a company not to leak your data is for them not to have it. The only way to trust a company not to break their product or exploit you with it is for this not to be possible.