I seriously doubt it. Disney has been through the same phase in the past, and managed to bounce back. They've managed to bounce back after WW2, Walt's death, financial failures of attempted PG faire while using the Walt Disney brand, the Gulf War recession, the UK's withdrawal from the ERM, 9/11, the post-Renaissance slump, the credit crunch and the resulting global financial crisis of the late 00s, so I'm sure they'll bounce back after the coronavirus pandemic, especially now that they have the global
Disney+ service, and revenue is set to increase as it becomes available in other markets. When this is all over, Disney+ will be their Cinderella, and The Walt Disney Company will come back a stronger corporation.
It would be unlikely that Disney would cease to exist. I can see a reorganization, a re-evaluation of thing (like trimming the fat) but to up and not exist any more is unlikely; they aren't the type to want to throw in the towel. They were doing finanically good beforehand (though yes recent acquisitions add a layer of burder). Most of the companies that have gone by the wasteside did because they were in financial trouble. I'm worried about JCP who was already and has already for the last several years on the verge of non-existence. Coming back from this all may prove more difficult for companies that were known to be struggling.
I only hope this doesn't mean the Disney Stores will be sacrificed, seeing as they already have been cutting back on a lot of stores lately, given that they have suffered from the fallout the TCP ownership between 2004-2008 has brought upon them. They could, however, start refurbishing some stores and returning to major markets they once lost, but this time not going overboard on expansion like they did during the Renaissance.