A little over two weeks does not equal the park closing for months and let's really all hope that Disney sticks to its guns and reopens on April 1 no matter what.
That might sound mean and cruel at first, but the amount of small mom and pop businesses that depend on all of these theme parks being open is incredible. Seriously, the So. Cal. economy won't be able to handle a sustained closure of all theme parks and if they all remain closed, we will see increased homelessness and far more rampant spread of disease than we can even imagine. And if Disney sticks to its guns, then the other theme parks will follow suit as well and we can minimize the long term impact. This will also give movie theaters, etc. ammunition to reopen at that time as well.
Now, don't get me wrong, if Disney reopens on April 1, I am sure it won't be business as usual nor should it be, there are things, for example Finding Nemo Subs (those are mobile petri dishes after all) that should be closed for a while and I am sure Disney is coming up with a far more detailed plan for this. They quite literally have a plan for a Zombie Apocalypse, so I fail to see how Disney didn't have a plan for a global pandemic like this that would have allowed them to stay open and still protect public health. Which means this closure has little to do with public health and much more to do with public perception.