Neither. I am not certain where the line should be drawn. I am not a zealot. I evaluate both positions and see if there is a way to balance both interests. If there is none, I err on the side of the customer ( ie. me ).

And I am saying all this, because there is a reason for business to gather this information. I am willing to entertain an argument for keeping some of that data for efficient processing of my business. I am less charitable with hoarding data for no other reason than selling me more stuff and or outright selling that information to 3rd party to that in some other way.

So yeah. Neither. But there is a line. I just don't know where it should be.