1. "reproduce, modify, create derivative works (such as those resulting from translations, adaptations or other changes we make so that your content works better with our Services), communicate, publish, publicly perform, publicly display and distribute such content."
2. Why they should have data even after we stop using their Services?
Users may want just storage but no integration/lock-in with their services. Google can offer "opt-in/opt-out" mechanism from their services. Is n't it?