If I knew a service or company I used were doing this, I'd take what data I can and delete my account. Good things rarely happen in a transition. I'm not saying it's right, I'm just saying what me, the user, has been trained to do for my safety.
Also, do you have any example of open source company that monetized user data? Has it happened to you?
The reason that I am asking is that it is very rare to see an open source company being profitable without being focused on enterprise market. Stories of successful ISVs should be praised, not met with suspicion. It seems like anti-capitalist concern trolling.