I would be really curious to see if this sort of strong arm tactic actually works for them. Part of me wants to see them implement it just to see if their users

I would be really curious to see if this sort of strong arm tactic actually works for them. Part of me wants to see them implement it just to see if their users cry loud enough to make them revert, but I have a feeling the vast majority would just disable Adblock and go on about their business. Most anyone serious about privacy likely quit using free email services long ago.