To put it most simply because the first response was long and not clear.
- Centralized Google can be thought of as a person, a friend who you ask questions to but who has his own self interest.
- Decentralized AI can be individualized, personalized, so that it becomes the extension of your mind and body, it's part of your digital self.
So this is the difference between the mainframe (Google) and the personal computer. People used to wonder why would anyone ever need a personal computer? Well now we know why. The same is true for personal agents or personal AI. If you want to be able to trust it to deal with your most personal problems then perhaps you want to know 100% that it's aligned to you as much as possible. To make it safe requires self regulation which means your personal AI has to be ethically aware, morally aware, legally aware, but it pursues your goals as you define them within that awareness.
So, your agent might be given a goal to accomplish a task for you like make money as a personal business and the agent would then with full understanding of the laws, of ethical standards, of your morals, be able to generate content and make an income for you. Suppose there is a current debate going on about for example the morality of pornography and the agent is smart enough to monitor current public opinion on that topic to determine when the best time is to enter into that market? If you don't have anything specific in your personal morality restricting it from doing so then when public sentiment shifts in favor of pornography then it will enter in that market perhaps by buying stocks in companies in that industry or more directly.
So what is the point? The point is you don't need Google to keep you safe. You just need smart enough AI to have awareness of the same laws, ethics and morals Google as a company is aware of. The rest is just cost benefit analysis calculations on what actions are worth the risk or not.
well...who knows where all this leads to. Steemit is a good example to study... even if simple bots, that are not "carrier" of AI... and only doing things for their "owners" or makers... they react faster, never forget, are not emotional... they are changing the way of interaction... not very romatically... anyway might be better than centralized manipulation from a capitalistic aimed company like google.