Take
The Mandalorian -- people in Europe would happily sign up to Disney+ and watch it. They can't; so they're pirating it en-masse. Partly because they don't want to wait until March 2020, partly to avoid spoilers.
Now with
@Janx's hypothetical idea, what we're doing is allowing people to sign up and start watching it. And
then we're withholding the rest just out of reach. The temptation is even greater, because you want to see what happens next. But in this model, the rest of the season
is out there -- it's not like
The Mandalorian where everybody has to wait together. It's just that your provider is making
you wait a week for each new episode, even though the guy down the street is on Episode 6.
So instead of being forced to wait a week for each episode, people would just pirate the entire season and binge it. In that scenario, you'd be guaranteeing your show would be pirated.