The problem is that "wrong" can be anything arbitrary, and what's not "wrong" today, it can be "wrong" tomorrow, however arbitrary it is. Somewhere it is wrong (illegal) to call someone a "n*zi", even online.
Also anyone who tells me that they have nothing to hide, I ask for their password. For some reason they don't give me their password. Interesting, huh?
Mind you, I was speaking in general about people who claim they don't care about their privacy, or about these companies collecting their personal data, or having a history of their private messages, etc.
How can you not care about them saving your conversations in plain text, but then suddenly care about it when I ask you to show it to me? The only difference seems to be that I'm actively, personally, directly asking you for it, but ultimately it would be the same outcome.
We are talking in a thread about NSA having your data vs other companies having your data.
(Un)fortunately you can't be prosecuted for crimes which were not illegal at the time of the offence.
Of course this doesn't take into account activities retroactively deemed "wrong" by The Great Twitter Mob which can have some serious effect on your livelihood because you made a Richard Gere gerbil joke some 20 years ago.