[dasil003]

Even with identical security stance (which I doubt) across services I'd still expect this because A) pwnable accounts on existing services were most likely already pwned, whereas Disney+ has a mass onboarding of pwnable accounts, so it's Christmas for scrit kiddies and B) there's a ton of attention on Disney+ right now so there will be much more press scrutiny regardless of the true scale of the problem.

[WorldMaker]

C) The early wave that seems to have been most targeted was early signups that included big sales on 2 and 3-year prepurchases. Risk/reward balance on stealing those accounts must have been hugely tempting.