I like how you put this. Yes, it does seem like our ownership of digital services is tenuous, unlike owning a knife or a car. I could wake up tomorrow and conceivably be locked out of my Twitter, Gmail, Facebook accounts forever.

Perhaps in the new era of tech we'll have better data portability and ownership. Sure, maybe Google can kick me off but they should still let me export all my data.

See my reply below about public blockchains.