Oh wow, perhaps I was too terse and left too much room for interpretation. I meant that there is no way for a for-profit company to eventually sell personalized segment data once it has it, even if there were initial promises not to do so.
In that regard, the "siren call", as dwohnitmok says, it's a very appropriate way of encapsulating what I meant. You can be bold and not do it, but as soon as you have investors, they are going to demand it , pressure you into doing it, and if you do not comply replace you with someone who will not be sitting in a potentially profitable line of business and do nothing.
That's not really true. Google & Facebook only sell targeting for a reason: it's more profitable than selling the data itself. Why would you sell the user data you worked so hard to collect when you can sell targeting on it again and again? It's actually in Google & Facebook's interest that no one except them have data on you.
In that regard, the "siren call", as dwohnitmok says, it's a very appropriate way of encapsulating what I meant. You can be bold and not do it, but as soon as you have investors, they are going to demand it , pressure you into doing it, and if you do not comply replace you with someone who will not be sitting in a potentially profitable line of business and do nothing.