Threatening to build a prison is such theatrical nonsense. Even if it happened, the only downside would be if was super tall or something and somehow interfered with sightlines.
It wouldn't have impact any more than a Haunted Mansion show building we never see.
If the threat is, ooh, dangerous prisoners, again it's a non-issue. To paraphrase the great George Carlin, there's no danger being next to a prison. If someone breaks out, they are not hanging around. They are out of there. We're not going to see some violent offender in an orange jumpsuit stroll into Epcot.