Of course. The closure could very well be extended, so Disney would be foolish not to be prepared for more than a two week closure. However, preparing to be closed longer, and planning to be closed longer are two different things. The college where DW works is planning to be closed for two weeks, but actively preparing for the possibility it could be longer; but just because they're prepared for longer doesn't mean they're writing off the plan to reopen in two weeks, it just means they won't be caught off guard if they don't.
What it means is they hope to reopen in 2 weeks. Doesn't mean they expect to though. Two different things. For a business the size of disney let's say I'm 80% sure it won't open in 2 weeks and expect it to be longer. 20% would be enough to leave opening in 2 weeks as an option and not take it off the table.