Maybe blockchains immutability is going to actually make people think twice before putting something online. "Web2" makes us think that we can delete whatever we post, or what we send is not going to be stored. And we believe it because it is technically possible, even though we don't have any way to double check. If a service claims that you can delete/hide whatever data you uploaded on the blockchain, you'd be able…
Given that the the two most important features of a blockchain are decentralization and immutability how would any service ever be able to guarantee me that? That implies they own the blockchain, in which case it's just a slow database.